Article beginning on page 286.
Psyche 8:286, 1897.

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286 PSYCHE. [^November 1898.
ating the sharply angled hind margin. Plates of male once and a half the length of pre- ceding segment, narrow and slender, very gradually narrowed to tips.
Described from several males and females collected at Los Angeles, Cal., by Prof. A. P. Morse, at Prescott, Ariz., by Dr. R. E.
Kunze, and one specimen in the National
Museum, taken at Los Angeles by Mr.
Koebele. This, one of our prettiest Tetti- gonids, has long borne the above Ms. name of Dr. Uhler.
Tett'&wo?iia cj~tliiti'a n. sp. Length 2 5 mm., of $ 4.25 mm.
Pale yellowish, dor-
sum and more or less of sternum, black. Face without distinct markings. Vertex with
three black dots on front edge, one at center and one on
either side; on either side of
the disc, near front edge and parallel with it, is a black line which originates back of the point and terminatesover the frontal suture; two fine medinn longitudinal lines on poste- rior half of disc, and a small spot on either side between ocellus and eye, black. Pronoiturn bright green, front margin yellow, broaden- ing laterally, Scutel with the transverse impressed line and three very fine lines con- necting it with hinder margin, black, causing the whole to appear like a black double loop on basal half. Elytra bright green by re- flected light (smoky by transmitted) with a bluish tinge along the clavn.1 suture and h e of costal margin, the principal veins more or less darkened, the apical margin trans- parent. Wing's deep smoky.
Last ventral segment of the female twice the length of preceding, the hind margin acutely angled, the edge emareinate on either side of the acute point. Male plates of me- dinm length, slender, narrowing to acute, slightly diverging, dark brown points.
Described from one female and n~~rne~ous males, collected at 13a11n Springs, Cala., by Prof. A. P. Morse. I have one specimen from Arizona, received from the Cornell Univer- sity collection. This fine little species has long borne the above Ms. name of Dr. Uhler. Tettigonia aurora n. sp. Length of $ 7
mm. Pale yellowish, legs inclining to
orange, dorsum bright carmine. Front with three longitudinal black lines nearly through- out its length on the disc, two abbreviated dashes above, and two dots on each lateral .
margin, one at antenna1 pit, the other at clypeal angle. A transverse row of three black spots on each gena. Clypens with a dark median line. Front edge of vertex with three black dots, one at center and one on either side. Disc of vertex with a. black line on either side, near and mostly parallel with front edge, extending from a short longi- tudinal dash near median line and just back 01 apex to the frontal suture; basal half of vertex with four equidistant rectangular spots, the two outer including the ocelli, the two inner somewhat elongate. l'ronotum
pale, slightly tinged with reddish posteriorly, with a row of six rectangular black spots near anterior margin, and a row of tour
smaller ones near hind margin; disc with four indistinct longitudinal lines. Scutel yellow, with the transverse impressed line, a median longitudinal stripe, and two dots at base black.
Elytra brick red, the principal
veins paler, the inner apical all transparent. Wings infuscated.
Last ventral segment of female twice the length of the preceding, hind margin broadly rounded.
Described from two females collected in
Arizona and received from
the Cornell Uni-
vcrsity colleclion. This is another of Dr. Uhler's Ms. species, and the thyee are de- scribed under these names at his request. A NEW FORM OF PULVINARIA,
BY G. B. KING AND T. D. A. COCKERELL.
Pitluisaria i)m~ nterallills subsp. tiliue. "subsp. nov.
9. Scale 6 mm. long, 5 broad, 2 high,
varying in size, sometimes as much as 8 mm.



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November 1898:I PSYCHE. 287
long.
Ovisac and form of insect as in in-
flumerabili's.
Body grey, with some lighter
patches and black spots, giving a mottled appearance which is characteristic. Dried specimens become reddish-brown or greyish. Eggs white.
Antennae usually 7-segmented, the several segments measuring as follows in pp: - (11 37. (2.) 39- (3.) 54. (4.1 68- (5.) 15- (6.) 17. (7.) 42. Formula 4372156. By the
division of 4, the antennae become 8-seg- mented, t.he measurerneiits in pp being:- (I.) 39. (2.) 31. (3.) 56- (4.1 42. (5.1 25. (6.) 20. (7.) 23. (8.) 45. Formula 38412576. Of
course these measurements vary more or
less in different individuals. Legs ordinary; front leg with coxa 70, femur 152, tibia, 113 tarsus, 65, claw 20 pp. All the digitules filiform, tarsal digitules very long. Margiual spines blunt, 34 to 37 pp long.
flab.- On TiZia aniericam, MeLhuen,
Lawrence and Andover, Mass., Jnne 1898.
(G. B. King). This insect is described as a subspecies of innumerabilis, because it is very closely allied to it, and evidently a comparatively recent segregate. It will
probably be treated as a distinct specics when tlie genus is revised. The mottled appear- ance is found by Mr. King to be constant and distinctive. The microscopical charac- ters are nearly those of innumorabiUs, but the antenna1 segments seem to be constantly shorter, and the marginal spines longer, than in that insect.
JANET ON MYRMECOPHILOUS ANI-
MALS.
The literature upon myrmecophily is so
extensive and scattered that a work which gives a general survey of the subject is certainly welcome. Such a desirable work is Janet's " Rapports des animaux myrm6- cophiles avec les fourmis" (Liinoges 1897, So), a pamphlet of nearly one hundred
pages, dealing chiefly with insects, in a systematic and comprehensive way, although discussing also certain Nematodes, Isopods and Arachnids.
In view of the fact that almost thirteen hundred species of inyrmecophilous animals are known, the work is necessarily concise, but the author has condensed a large amount of information into a comparatively small space and has wisely supplemented his
statements at every step by references to original sources oJ' information, which
number two hundred titles. The results of other workers are well summarized and
original observations abound throughout. Those animals only are regirded as truly inyrrnccophilous which, for whatever reason, actually seek the society of suits and volun- tarily come to live in their nests. From this definition, therefore, are excluded Aphids and Lycaenid larvae, certain enemies, en- slaved ants and many insects which mimic ants. Janet considers these, indeed, but devotes special attention to true myrme- cophily, comprising the following categories, each of which is examined in detail: ĺ´pura sitism ; 'pJioresy, denoting the utilization of ants for transportation; myvmecocle-pty, signifying the theft of food from ants;
synechtry, the consumption of ants as food; synoeky, to express the habits of such ani- mals as enter ants' nests tor debris, warmth, sheltcr, etc., have no direct relations with the ants themselves and are tolerated by the latter; and ?~zy~mecowcity: a special kind of symbiosis.
Reserving the term symbiosis to imply
mutual benefit, Janet suggests thc word
hamabiosis to signify the habitual dwelling together of two species, for any purpose, with or without evident advantage, either mutual or one-sided.
In this country, rnyrmecophily offers a
large, fresh and fascinating subject for study,'requiring not only minute observation and great patience but also considerable mechanical ingenuity.




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