T. D. A. Cockerell.
New Bees from Brazil.
Psyche 19:41-61, 1912.

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19121 Cookerell-New Bees from Brazil 41
Wings. Length 5 mm. Infuscated; veins fuscous, except sub costa, which is piceous; stigma piceous.
Male.
Length 3 mm. Head, excluding mandibles, broader than long, margin of occiput slightly concave; mandibles well developed, toothless; clypeus slightly convex, anterior border slightly accuate; eyes very large and convex; ocelli large; cheeks short; antennae long, extending to second abdominal segment; scape short, barely extending to occiput; first funicular joint as broad as long, second three times length of first, joints 3-11 sub-equal, each about twice the length of first; terminal l+ as long as the preceding joint. Pronotum small, with convex sides. Mesonotum broad. Epinotum rounded above, with small tubercle at base of de- clivity. Petiole short; node thickened, short, rounded in front, nearly flat behind. Gaster short, much broader than deep. Legs slender. Head and thorax opaque, coarsely punctate. Gaster shining. Head and tho- rax with abundant, erect fuscous pile. Gaster with semi-erect white pile. An- tennae with fine white pubescence.
Color black, except tarsal joints, which are fuscous. Genitalia yellow. Wings
slightly infuscated, veins fuscous.
THE STANFORD EXPEDITION TO BRAZIL, 1911. J. C. BRAMIER, Chief.
NEW BEES FROM BRAZIL.
BY T. D. A. COCKERELL.
The University of Colorado, Boulder, Colo. Eulaema manni sp. nov.
Male. Length about 19 mm.;
anterior wing 16 mm.; facial quadrangle much longer than broad; clypeus high, broadly hollowed (not in the least keeled) in the middle, with a smooth band, bounded on each side by densely punctured regions; this central basin of the clypeus is bounded on each side by obtuse but well-devel- oped longitudinal keels or ridges;
labrum tricarinate; a large punctured basin below middle ocellus, the sides of which are continued below as an elevation (grooved in the middle) down middle of supraclypeal area; third antenna! joint longer than fourth, but not nearly twice as long; mesothorax anteriorly dull, densely and minutely punctured, posteriorly shining in middle; scutellum shining, with very minute and feeble punctures, and scattered larger ones; abdomen finely gran- ular; middle basitarsi long, with a rounded lobe behind at upper end; hind tibiae greatly incrassate, the protuberances above the spurs small, but the apical half of the posterior side strongly grooved, and ending in three spines or teeth, of which the outer two are much nearest together; hind basitarsi produced to a sharp angle at apex; second s. m. very broad, receiving first r. n. at about the beginning of its Pu&e 19:41-61 (1912). hup Itpsycht enlclub org/i~/l9-IMl.htinl



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42 Psyche [April
last third; second r. n, joining third t. c. Face and front brilliant green, the mid- die of the clypeus and supraclypeal area strongly flushed with crimson, the sides of the face with golden; mandibles black; vertex and cheeks a sort of dark copper color, with black hair; antennae black, flagellum dark reddish beneath; prothorax dark coppery, with black hair; pleura dark purple, with dark hair showing reddish in favorable lights; nearly the anterior half of mesothorax brilliant green, with thin ferruginous hair, the posterior part, and the scutellum black (slightly brassy), with black hair; abdomen clear yellowish-green, with short ferruginous hair, becom- ing whitish apically, the basal segment with black hair at sides toward base; no \
bands o~ abdomen; apex of abdomen bituberculate; ventral surface of abdomen with segments 3 to 5 green, the others dark; tegulae large, pointed posteriorly, ante- riorly with a large green patch; wings strongly dusky, reddish; legs black, ante- rior tibiae purple in front; middle tibiae bronzy behind, in front flattened, dull and without punctures, suffused with carmine, except at apex, where they are bright blue-green; middle basitarsi densely covered on outer side with shining yellowish- white hair; hind basitarsi smooth and concave on outer side, on inner covered with black hair.
Hub.-Abuna, on the Rio Madeira, Brazil (Mann & Baker). A magnificent species, but superficially, when seen from behind,, looking exactly like the common E. mussitans (Fabr.). It may also be compared with E. superba (Hoffm.), to the vicinity of which it runs in Ducke's table. E. manni will be especially known by its mussitans-like appearance, bicolored mesothorax, total absence of a median keel or clypeus, small size of the prominences above the spurs of hind tibiae, and first abdominal segment colored like the rest. The coloration resembles that of E. fallax Smith, but that species has a central keel on the clypeus. Xylocopa branneri sp. nov.
Female.
Length 21 mm., anterior wing 16 mm.; exactly like X. grisescens Lep., but much smaller, with hair on sides of thorax all black. Abdomen beneath with
a median raised line; clypeus smooth in middle except apically, lateral margins strongly elevated; labrum tridendate; wings dark, with bluish green and purple tints. Hub.-Natal, State of Rio Grande do Norte, Brazil (W. M. Mann).
Named after Dr. J. C. Branner, leader of the expedition. Centris (Hemisia) bakeri sp. nov.
Male.
Length about 13 mm., anterior wing 11; head and thorax black, with fulvous pubescence above, white below, and on cheeks and occiput, hairs of middle of vertex stained with fuscous; face narrow, eyes diverging below; clypeus strongly raised, with a broad flattened face, the sides of which are sparsely punctured; scape



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19121 CockerellÌÔNe Bees from Brazil 43
short, yellow in front; flagellum reddish-black, apical half of the long first joint red beneath; clypeus (except a very broad black bar on each side), a transversely crescentic supraclypeal mark, lateral marks (pointed above on orbital margin), the short malar space, labrum and more than basal two-thirds of mandibles all lemon- yellow; tegulae ferruginous, dark at base; wings reddish-smoky, nervures fuscous; legs black, with the tarsi, bind femora apically, and hind tibiae for the greater part (the basal half behind) ferruginous; spurs ferruginous; spot at base of anterior
and middle tibiae, and long stripe on anterior tibiae, yellow; hair of legs mostly pale, black on hind tibiae except a large tuft posteriorly on apical half, on hind basitarsi reddish-black without and dark red within, but pale and strongly plumose poste- riorly; hair on inner side of anterior and middle tarsi red; abdomen short and broad, dark metallic green, with the apical margin and sides of fourth segment, and the whole of fifth to seventh, clear red, a reddish suffusion also at sides of second and third apically; second and third segments each with large lateral yellow patches, that on the second much the largest, subquadrate; first abdominal segment, except at apex, and fourth and following segments, with pale hair; apex of first, and sec- ond and third, with thin short black hair, only visible in lateral view; venter with abundant pale reddish hair.
Hob.-Rio Madeira, Brazil; Madeira-Mamore R. R. Co. Camp 43 (Mann & Baker). This is 325 km. from Porto Velho. C. bakeri
is a species of the C. versicolor group, recognizable by the yellow patches on the sides of the abdomen. C. haemorrhoidalis (Fb.) has a yellow spot on each side of the second abdominal segment, but the abdomen is quite a different color, and the thorax is dark- haired.
The three species of Hemisia in the collection are separable thus: Wings bicolored, very dark, with broadly pallid apical field; hair of ver- tex ( $ ) black. .......................................... maculata Lep. Wings not bicolored. ................................................. .1 Abdomen yellowish-green, the hind margins of the segments pallid, but the apex not red; cream-colored spots at sides of segments 2-5, that on 2 a mere dot. ...................................... .oenea Lep. Abdomen dark green, red apically; yellow patches on sides of second segment very large. ........................................ bakeri Ckll. Centris (Ptilotopus) heterodonta sp. nov. Female. Very robust; length about 19 mm., anterior wing about 12; black, the legs and the end of the abdomen red; hair of head and thorax fulvous, without black or fuscous, paler beneath, becoming dull white on lower part of cheeks; scape thick, yellow in front; flagellum dark, ferruginous at extreme apex; clypeus convex with a large median cup-shaped black area, on which is a longitudinal yellow band, this band smooth and shining, but the black space on each side of it dull, with



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'44 Pwch.? (April
mttered strong puincturea;
very broad anterohteral areas of &pew yellow, as also arq the lateral face-marks, which are trianguiar, the upper edge nearly straight. but with a linear process extending a short way up orbital margin; l~bm pale yellow, broad, but with 8 median apical spine, which is dark reddish; no supra- clypl mark malar space dark reddish; mandibles strongly curved, very broadly yellow basally, apically broadly red on outer aide, teeth four, two apical, one about twice as long as the other (inner one), one broadly truncate and subemargkiate on the inner side neat the middle, and a short angular one at the base of that; lower part of sides of prothorn red; truncation of meta-thorax with a large whitish patch on each side; tegutie light tmuginous; wings strongly dusky, marginal cell smoky, strongly appendiculate, the area above the appendicular nervure f uligutotu; ante- rior and middle tibb with a yellow spot at base, and indications ol a stripe on ante- rior pair; hair of legs bright fmuginous, cream-colored on anterior legs behind; Bcopa of hind tibife and basitarsus very large, strongly plumose, a vwy fine coppery [red; abdomen with the first three segments black above, the hind margins of aw- ond and third dark red, the remaining segments red, the fourth dark basally; first segment with pale fulvous hair; second and third with very short inconspicuous Hack hair, the others with red hair; venter fermginoua; apical pfate truncate. Hob.-Porto Velho, Rio Madeira, Brazil (Mann <fe Baker). A very fine species, not close to any known to me. It is placed in Ptihtopus, but in spite of its lack of metallic color, it is doubtless allied to the species of HmWla.
In Friese's table of Melanocen-
iris (Ptilotopus) it runs to 22, and except for its rather smaller size, on to the vicinity of fuscata or jumkttnS, which it does not re- semble. In the table of species with red abdomen it cannot be made to fit anywhere.
It cannot be run to anything in Schrottky's tables of Brazilian or Paraguayan species. Centris (Pfiteopi") libmatis sp. nov.
Female. Length about 11$ mm.; black, the head and thorax with fulvous pub- escence, becoming whip beneath, fuscous on vertex; clypew much broader than long, rugose, with a longitudinal keel, a median trianguinr area black, the apex of the triangle downwards, the lateral areas, almost meeting below, yellow; a nar- rowly crescentic suptaclypeal mark, lateral face-marks filling space between dy- pews and orbit and sending a narrow band up orbital mar& beyond level of an- tennse, lab- entirely, and more than 'basal halt of mandibles, all lemon-yellow; mandibles rather slender, not dentate; eyes yellowish-green; antenn~ short, black, first joint of flsgelhim elongated; mesoth&rax and acutelturn densely punctured; a #lender hairless line along hinder middle of mesothorax, but no other bare apace; tfegulte closely and minutely punctured, ferruginous, with broad whitish margin; wings strongly infuscated, nemirea piceous, very heavy; the three submarghal cells about equdy long Wow, the mnd broader t h high, little pduced at upper apical corner, receiving first r. n. about middle; marginal d l short, with a ful-



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19121 Cockerell-New Bees from Brazil 45
iginous streak at base; legs black, the middle and anterior tibiae with a yellow spot at base; hair of legs black, in part very dark fuscous, thin and yellowish-white on outer side of anterior tibiae, and a fringe of the same color on their femora; scopa of hind legs black, large and very coarse; abdomen black, moderately shining, with short black hair, the first segment without pale hair, but that of the fifth thin and white (best seen in lateral view), with an apical chocolate-colored fringe, and long chocolate hairs on each side of apical plate; beneath, the fourth segment has a con- spicuous fringe of light hair.
Hab.-Independencia, Parahyba, Brazil (Mann & Heath). At
first sight this seems a most ordinary little species, just like several of the nitida group. On closer examination, it appears not to be a typical Centris, by reason of the venation, which in Schrottky's table of Brazilian genera, would throw it out of Centris altogether. It is however actually allied to some of the nitida series, especially perhaps to C. birkmanni; Friese, which however has a much shorter first s. m., and the clypeus entirely black in the females. Centris ceratocephala sp. nov.
Female. Length about 14 mm., unusually long and slender for a Centris, head and thorax black, abdomen bright red; legs red, the anterior ones, and the middle tibiae, suffused with black. Very close to C. bicornuta Mocsary, having the same peculiar structure, but larger; the shining clypeus black with a triangular yellow mark on each side; wings dusky, but not dark; abdomen with the first segment suffused with blackish, but its hair all pale fulvous; second and third segments bare, fourth with fuscous hair, fifth with fulvous; scopa of hind legs entirely light fulvo- ferruginous. There is much black hair on the head above, both before and behind the ocelli. Mandibles bidentate; labrum longer than broad, black with two very large elongate yellow patches, which nearly meet in the middle line below, apex strongly bidentate, lateral margins obtusely angulate near the middle; teeth at sides of apex of clypeus long, black, cylindrical. Eyes dark brown. Hair of thorax
above fulvo-ferruginous, without any dark. Hob.-Manaos, Brazil (Mann & Baker). Possibly a subspecies of C. bicornuta.
Manaos is more than a thousand miles from the type locality of bicornuta.
Dianthidium heathi sp. nov.
Male. Length about 5 mm.; head and thorax strongly and densely punctured; clypeus, mandibles except apex, broad bands along inner orbits and two long narrow .
bands passing just mesad of antenna1 sockets, all pale yellow; scape ferruginous; a continuous orange band across occipital region; mesothorax with very large punc- tures, black with somewhat more than the lateral thirds of the anterior margin broadly yellow; a broad yellow band from axillae across scutellum, narrowly inter-



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46 Psyche [April
rupted in middle; legs reddish, blackish and yellow, the anterior femora and tibiae broadly striped with yellow; tegulae deep ferruginous, with an orange spot; mar- ginal cell and apical part of wing dark fuliginous; abdomen black, with very broad oblique orange bands, widely separated in middle, on first segment, on second a nar- rowly pear-shaped yellow mark on each extreme side, on third a narrow yellow band on each side ending mesad in a very large elongate club, on fourth to sixth entire bands, that on sixth notched in front; seventh segment cream-color, the lateral cor- ners with long straight spines, the truncate ends of which are dark, while in the mid- dle is a very slight prominence. So close to D. gregarium (Hypanthidium gregarium Schrottky) that I had considered it identical, until I noted the antennae, which is heathi are long but quite normal, the flagellum slender but not crenulate, dark above, ferruginous below, whereas in gregarium the flagellum is very long, strongly crenu- late below, each joint light ferruginous with the base black, but the last entirely black; the armature of the apex of the abdomen is quite the same in both. These forms have pulvilli, and represent an aberrant section of Dianthidium. Hab.-Independencia, Parahyba, Brazil (type locality), 3 males (Mann and Heath) ;
Natal, Brazil, one male (W. M. Mann). The D. gregarium compared is from Villa Encarnacion, Paraguay, col- lected by Schrottky. An apparently allied species is Anthidium pygmceum Friese, known only in the female. Judging from Friese's description, our species is too different from pygmceum to be its male.
Ceratina chrysocephala sp. nov.
Female. Length about 94 mm.; head and thorax very strongly and coarsely punctured, golden-green, the head with golden tints, the mesothorax with crimson, the posterior disc of mesothorax with a smooth dark area; pubescence very scanty, thin and white on pleura and sides of metathorax; mandibles and labrum entirely black; clypeus dull in the middle, and with large punctures, the lower margin with a very broad transverse orange band, not reaching lateral corners; lateral face- marks orange bands, very broad below, rather irregular on inner side, ending above at about level of antennae; posterior orbits with broad orange bands, the upper part leaving the orbit; antennae red as far as fourth or fifth joint, darkpiceous or black beyond; scutellum closely punctured, roughly granular posteriorly; tubercles green; tegulae dark chestnut;
wings deep fuliginous, with violet tints; legs more or less green; anterior tibiae with a yellow stripe, connecting with a spot at apex of femur; middle tibiae with a yellow basal spot, hind tibiae ferruginous at base; hind tibiae with much white hair; middle femora conspicuously angled beneath toward base; abdomen shining dark bluish-green, with slight brassy tints, strongly punc- tured; sixth ventral segment subcarinate. Hob.-Manaos, Brazil (Mann & Baker). In Schrottky's table of Brazilian species this runs to the vicinity of C. longiceps Sm. and cupriventris Sm. The shape of the head is not at all as in



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1912} ~oc&rell-~ew Bees from Brazil 47
longiceps, while the colors and markings disagree with cupriventris. In Schrottky's later table (Zeits. Hym. Dipt., 1907, p. 480) this runs to C. gossypii Schrottky, which really seems to be closely allied, but in gossypii the pleura is finely punctured, the scutellum is blue-green, and there are various other differences. Compari- son with other recent descriptions does not indicate identity in any case.
Ceratina manni sp. nov.
Female.
Length about 4$ mm.; dark but shining bluish-green, the apical half of the abdomen roughened; sides of front hardly punctured; a large broad elongate (vertical) mark on clypeus, a small broad-oval mark on each side of it, a broad elon- gate mark (like that on clypeus, but smaller) along each anterior orbit opposite antennae, and a stripe on each cheek (receding from orbit) all ivory-white; mandi- bles and labrum dark, the labrum and apical half of mandibles obscurely reddish; antennae black basally, the thick flagellum light ferruginous below, dark rufopi- ceous above; tubercles broadly white margined; tegulse dark reddish; wings dusky. The mouthparts are not greatly elongated. Tarsi dusky reddish; anterior tibiae with a pale stripe.
(In C. lucidula the legs are pale testaceous.) Hob.-Independencia, Parahyba, Brazil, 6 females (Mann & Heath). This little species resembles C. nautlana Ckll., but is at once distinguished by the five light marks on face. It also resem- bles, on account of its small size, C. lucidula Sm., muelleri Friese, gossypii Schrottky, and minima Friese, but it will not agree with any of them. Ducke says that muelleri is the same as lucidula, but the legs are quite differently colored. C. minima is known only in the male, but I am confident that manni is not its female. Melipona pseudocentris sp. nov.
Worker. Length about 115 mm.; head and thorax with pale fulvous pubescence, bright orange-fulvous in middle of pleura; clypeus light ferruginous, the upper border infuscated, a median stripe and the lateral comers cream-colored; a cres- centic cream-colored supraclypeal mark, bordered above by ferruginous; cream- colored lateral face-marks broad below, narrowing above, ending above level of middle of front; scape red; third antenna1 joint conspicuously red beneath; abdo- men bright chestnut red, with coarse black hair in apical region, but tuft at ex- Ì
treme apex ferruginous; legs red and black. Extremely close to M. rufiventris
Lep., from which it differs in its larger size and considerably darker abdomen. The legs are marked exactly as in rufiventris, and the face markings essentially agree. Hob.-Manaos, Brazil (Mann & Baker).
I should have con-
sidered this a local race, or perhaps individual variety, of M. rufi-



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48 Psyche [April
ventris, were it not that the two specimens are quite alike, while a rufiventris from AbunA exactly agrees with one from F. Smith's collection, now in my possession. There is accordingly some evi- dence of stability in the comparatively slight characters noted. The name of the species is derived from the fact that superficially it is exactly like a red Centris, such as C. tarsata Smith. Ducke asserts that M. mixta Lep. is the same as rufiventris, but Lepele- tier says the hair of the head and thorax in mixta is black. Ducke also makes M. fulva Lep. a synonym of rufiventris, but according to a specimen before me, from F. Smith's collection, it is quite distinct; the legs, as Lepeletier describes, are fulvous, the hind tibiae without black markings, although the anterior and middle tibiae are strongly infuscated. In rufiventris the hind tibiae are red with about the apical half black, and there is long black hair on the posterior margin.
Melipona abunensis sp. nov.
Worker Length 10 mm. or slightly more; head, thorax and legs black, the large apical tarsal joints dark red; abdomen chestnut red, without bands; head broad; clypeus bare, dullish, minutely roughened, with a feebly indicated median dark red stripe; mandibles black, edentate; malar space large; sides of face bare; scape black, red at extreme base; flagellum reddish beneath; vertex with long black hair, occiput with light fulvous hair; mesothorax shining black, more than the posterior half bare, anterior part with long black hair, with shorter pale hair intermixed; scutello mesothoracic suture with black hair in front and pale behind; scutellum prominent, wholly black, apically with a tuft of long black hair, but the hind mar- gin with long pale fulvous hair; sides of metathorax with pale hair; hair of pleura pale anteriorly, but black below wings; anterior femora fringed with whitish hair behind, their tarsi with red hair on inner side; the broad hind tibiae fringed with black hair; tegulse ferruginous; wings orange-ferruginous, with ferruginous nervures; hair of apical part of abdomen mainly ferruginous, but some dark hair at sides of the last three segments; first abdominal segment with a black spot on each side. Hab.-AbunA, Rio Madeira, Brazil (Mann & Baker). The general appearance is like an overgrown M. mandacaia Sm., with the abdomen much brighter red. On more detailed comparison there are many differences, as in the color of the legs and base of abdomen.
~rigonarnanni sp. nov.
Worker. Length 7+9 mm., the wings about 8 mm.; rufotestaceous, the head
black, marked with very pale yellow, and the mesothorax black or piceous, mar-



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19121 CockweUÌÔNe Bees from Brazil 49
fined with ydlow; pubescence light Mvow; mandibles- light yellow, black at tip, with a strong tooth at inner comer; m&r space nstirow but distinct; dypeua, accept ft pair of aubobaolete reddish bara, elongate suptaclypedl mark (its å´uppe part reddish), and broad lateral face-&h, all pate yellow, the lateral marks filling space between clypeus and airtenme and eyea, ending squarely a little above level of antennw; front and mesothorn pruino~e with å´fin yellodh-gray hair; scape p&Ie '
yellow-testaceous, black above at apex; flaeellttm dark above and fernginow be- neath, last joint red also al-iove; prothorax yellow; narrow lateral margins of meso- thorax yetlow, and anterior margin broadly aubtestaceoua, except a central portion, which is dark; tegulae mfo-ftilvow, winga very long, mlftuaed with orange, except the broad apical field, which is grayish; neirvures fomu&nous; legs bright femgi- nous, with feireuginoua hair, but the broadly expanded apical part of hind tibise piceous, the hind basttarsi black, and the small joints of hind tarsi dark red; abdomen of the long and narrow type, shining, with scanty red hair. Hub.-Porto Velho, Rio Madeira, Brazil, two, one the type (Mann A Baker). Also one from AbunA, Rio Madeira (Mum & Bale). Related to T. cluvipes {Fabr.), which it resembles a good deal in the markings of the head and thorax, but much larger, with longer wings, the scutellum wholly light, etc. It is one of the species placed in the subgenus Tetragons. Trigona rhodoptera ap. nov
Worher. Length about 7+ mm., the very ample wings a little over 8; head black, with the clypeus, supreclypeal area, and more than lower half of cheeka (except a band along orbits) ferruginous; hair of vertex and front dark fuscous; aides of fa* pale grayish poUhose; cheeks densely covered with a short pale yellowish tomen- turn; eyes ferruginous; mandibles quinquedentate, dark reddish, blBAish apically; matar space quite distinct; scape ferruginous, black above at apex; flngellum clear femughow beneath, black above, except at apex; thorax entirely bright ferrugi- nous red, with hair of the same color; t&<e red; wine very red, orange-hilvous, hems clear red; legs red, with the greatly broadened hind tibite mope or less infuscated, having especially a black patch covering the inner half (on both sib of the tibia) apically; middle and hind tarsi infuscated; long hair on margin of hind tibia; sooty; abdomen short, very shiny, &rk fuscous with the base pale rufotesteeeous.
Bab.-Type from Abun&, Rio Madeira, Brazil (Mann & Baker). Also one from Madeira-Mamore It, R. Co. Camp 41, Rio Madeira, Brazil (Mann & Baker).
Superficially not unlike T. manni, but
entirely different in the markings of head and thorax and charac- ter of the mandibles.
T. pallia Lair., also collected at AbunA, is much smaller, with differently colored wings. T. willianu Friese must be a similar insect, but it has ferruginous hairs on the hind



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50 Psyche [April
tibiae, and the margins of the wings broadly smoky: the head also must be different.
Trigona frontalis flavocincta subsp. nov. Worker. Like T. frontalw Friese, but the pale markings of the thorax light yel- low instead of white; all the femora and anterior and middle tibiae and tarsi, clear ferruginous. Length 3 mm.
Hab.-Independencia, Parahyba, Brazil (Mann & Heath). Friese described T. frontalis from Honduras, without citing any precise locality or collector. Professor C. F. Baker kindly sent me four which he collected at Chinandega, Nicaragua. Some of the same lot, he informed me, were determined by Friese. Trigona pellucida sp, nov.
Worker. Like T. amalthea (Oliv.) except that the wings are clear, somewhat milky, with the apex a little dusky, the stigma and nervures bright clear ferrugi- nous; abdomen sepia-brown basally; hind tibia reddish, but dark; small joints of tarsi deep ferruginous. Length 5i mm., anterior wings 5. Mandibles dentate, obscure reddish at apex.
Dorsal surface of abdomen distinctly keeled. Hab.-Porto Velho, RiaMadeira, Brazil, one (Mann & Baker). This seems to be related to T. amalthea as T. fiavipennis Friese is to T. ruficrus. Possibly both represent mutations. Trigona branneri sp. nov.
Worker. Length 6s mm., anterior wing 61; like T. guiance Ckll., but smaller, with the wings only very faintly dusky, with a yellow stain in the base of the mar- ginal cell and along the subcostal and basal nervures; abdomen shining black; short tomenturn of thorax above dark fuscous, hardly noticeable; mandibles dark castaneous, dentate.
The series of eight is quite uniform in appearance. Com- pared with T. mficrus, it is at once known by the pale wings, and the black hind legs; compared with T. amalthea, it is larger, with pale wings, and the scape and flagellum both chestnut red beneath. The wings, although pale, are dusky com- pared with those of T. pellucida. I might think T. branneri to be T. flavipennis Friese, but Friese says the posterior tibiae of his species are more or less fulvous, which is not true of ours. A species which superficially looks just like T. branneri is T. postica (Latr.), but postica has a dull abdomen (except the extreme bases of the segments), with two patches of light pubescence on the fifth segment, and also a finely rugose punctate mesothorax.
Hob.-Manaos, Brazil, eight (Mann & Baker).