Article beginning on page 343.
Psyche 8:343-345, 1897.

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PSYCHE.
ARKANSAS MELANOPLI. - 11.
BY JEROME MCNEILL, FAYETTEVILLE, ARK.
A1 Tegmina rarely shorter than the abdomen when much shorter the species are large, (more than one inch in length) and robust. B1 Size large, never less than one inch in length usually much more, space between the eyes more than twice the width of the basal joint of the antennae, hind tibiae with a broad pale annulus (sometimes only apparent on the exterior face) preceded by a black sub-basal ring, median carina never obsolete upon the prozone, though often indistinct.
C1 Tegmina scarcely ever spotted and never striped on the anal field, hind tibiae and under surface of hind femora yellow, sides of prozone not expand- ing posteriorly . . Differeiz/iaZk Uhler. C2 Tegmina always maculate upon the discoidal field and frequently striped on the anal field, hind tibiae never yellow, either red or purplish, sides of the prozone plainly expanding posteriorly.
D1
Hind femora rarely banded on the disk of the outer face, tegmina usually exceeding slightly or considerably the hind femora, never much shorter than the abdomen, hind tibiae red or purplish . Biviitatus Jay.
D2 Hind femora generally very distinctly banded upon the disk of the outer face, tegmina much shorter than the abdomen, hind tibiae never purplish. . Viola Thus.
B' Size medium or small, space between the eyes not more than twice the width of the basal joint of the antennae, hind tibiae usually red without a pale annulus preceded by a black sub-basal spot or ring, rarely blue with the black followed by a pale ring, tegmina about equalling or more or less exceeding the abdomen.
C' Second transverse sulcus of the pronoturn not twice as distant from the third as from the first, teginina very rarely falling short, of the extremity of the hind femora.




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Dl Median carina of the prozone frequently indistinct but some trace of it is always present at least upon the anterior part of the prozone which is not distinctly longer than the metazone.
E1 Hind tibiae never red usually distinctly blue with the sub-basal black ring present and followed by a pale annulus or at least a pale spot exteriorly, transverse bands of the hind femora distinct upon the disk as well as upon the upper face; tegmina distinctly spotted on the discoidal field, with a linear series of alternate light and dark spots and generally less distinctly maculate with smaller spots upon the anal field. Impiger Sctdild.
E2 Hind tibiae never blue, usually red or green, occasionally with a black sub-basal ring but this is never followed by a light annulus. F1 Sub-basal ring of the hind tibiae usually distinct, the tibiae them- selves never green, tegmina obscurely spotted, sometimes slightly exceeding the hind femora but scarcely ever equalling the abdomen ; black bands of the hind femora usually distinct, but sometimes con- fluent on the disk of the outer face ; sides of the prozone expanding regularly and considerably ; inferior branches of the ovipositor merely angulate upon the outer side not distinctly toothed. Keeleri 720s. F2 Sub-basal ring of the hind tibiae represented at most by a black or fuscous spot upon the upper face ; tegmina generally exceeding the abdomen as well as the hind femora; inferior branches of theovipositor with a distinct tooth upon the outer side. G1 Prosternal spine distinctly and regularly tapering upon the apical half with the apex sub-acute ; median carina usually very indistinct upon the prozone, frequently almost entirely obsolete; tegmina generally distinctly spotted in the discoidal field; hind tibiae green or red. . . Atlanis Riley.
G2 Prosternal spine not tapering upon the apical half, slightly transverse and broadly rounded at the tip, median carina generally ' distinct, through slight, upon the prozone, tegmina nearly plain or more or less distinctly spotted in the discoidal field, hind tibiae red, very rarely green. . Few-~z~trum De Geer. D
Median carina of the prozone entirely wanting, prozone plainly longer than the metazone; fascia of the hind femora obsolete upon the disk of the outer face; post-ocular stripe of the pronotum very' indistinct or wanting; tegmina plain or inconspicuously maculate ; hind tibiae red or green. . . Packardii SM.
C2 Second transverse sulcus of the pronotum nearly twice as distant from



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April 1899.] PJ'YCHE. 345
the third as from the first and all are indistinct; tegmina scarcely reaching the hind femora, very obscurely spotted; no post-ocular stripe upon the head or lateral lobes of the pronotum; hind tibiae coral red with not a trace of a sub-basal black ring. . . Impudicus Scudd. A2 Tegmina much shorter than the abdomen. B1 Hind tibiae green.
C
Tegmina separated by a space greater than their width. Gradis Bruner.
C2 Tegmina attingent or slightly overlapping. . . Sylvatzcus 71.. sp. B
Hind tibiae red or fuscous.
C 1 Tegmina separated by a space much greater than the width of the frontal costa. . Obovi'tt;*e?ms Blatchley.
Ca Tegmina attingent or overlapping.
D1 Hind margin of the pronotum strongly angulate; tegmina decidedly longer than the pronotum and lanceolate. . . Baconi n. sp. D2 Hind margin of the pronotum slightly angulate; tegmina shorter than the pronotum, sub-elliptical in shape. . . Scudderi Thus. Melanophis differentialis Ukler. -This
species is apparently uncommon at least
in the mountainous part of the State.
It is represented in my collection by
specimens from Washington, Sebastian.
Crawford and Marion Counties. Two
specimens from the last mentioned lo-
cality collected July twentieth differ
rather remarkably from other specimens
from Arkansas. They are very dull
brown with considerable infuscations,
the tegmina being darker in the lateral
than in the dorsal field, irregularly
clouded over both areas and maculate
on the former. The diskof the prozone
is distinctly longitudinal and about half as long again as the metazone. The
hind femora are shorter than in typical
specimens.
Melanoplus bivittatus Say. - This very
variable species is rare in Northwestern Arkansas. I have collected but four
males and two females. The males
have uniformly red the females purplish
hind tibiae. According to Scudder those
with the red hind tibiae should be Me!.
femoratusBurm. but I am not able lo
recognize the distinctness of these sup
posed species. Two of the males were
captured June twenty-sixth near War
Eagle ford on the Spring Valley and
Clifty road. Another male was taken
near Clifty. The other specimens were
captured at several points in Marion
County from July tenth to twentieth.
Melanoplus viola Thos. -This spe-
cies is abundant in Northern Arkansas
and probably throughout the State in
suitable localities, which are wooded
hillsides and tops. I have thirty-one
males and twenty-nine females from
Washington, Carroll, Boone, Marion,
Newton, Madison and Crawford Coun-
ties in the northwestern, and Pulaski




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346 PSYCHE. [April 1899.
and Jefferson Counties in the central
part of the State. The earliest and
latest date of its capture are June thirti- eth and October twenty-sixth. Accord-
ing to Prof. Charles Woodworth, formerly Entomologist of the Arkansas Agricul-
tural Experiment Station, at present of
the University of California, this species sometimes lays its eggs in small holes
in rocks in stone fences. It is a larger species than would appear from Scud-
der's measurements which are 25 mm.
for male and female. Average specimens
in my collection measure as follows :
Length of body male, 25 mm. female
32 mm.
Length of hind femora male, 174 mm.
female 18 mm.
The tegmina vary from one and a half
times the length of the pronotum to the
length (male) of the abdomen. The
cerci are quite variable and the under
side is frequently red as in Met. clypea- tus Scudd. which is possibly only a syno- nym of Mel. viola.
THE MOUTHPARTS OF THE NEMATOCEROUS DIPTERA. 111. BY VERNON L. KELLOGG, STANFORD UNINERSITY. DIXIDAE.
ing of tabrum-epifha~ym (fig. 4, 2. @) , mandibles (fig. 4, ma?) which are short, Dixa sp. The females of Dixa weakly chitinized, trowel-shaped, with possess a mouth structure (see fig. 4)
truncate, distal margin with fine, deep
like those already described, consist- dentations ; maxillae (fig. 4, mx) with å´.-segmente palpus and max-
illar lobe weakly chitinized
but long and conspicuous;'
strong labium (fig. 4, Zi) with
free paraglossae and glossae
fused to form a membranous
median lobe; and hypophar-
ynx (fig. 4, hy>) of usual
type.
v Psychoda sp. Psychoda (see
Fig. 47 Mouthparts of Dim % ?; z. e/
fig, ) has no mandibles and the labium
labrum-epipharynx, ind mandible, mx max- presents but two terminal lobes.
The
ilia, mx I maxillar lobe, mx. p maxiliar pal- pus, Ii labium,& paraglossa, @ glossa, kyf zahm-!?@'ay~nx (%. 5, " !?) is
hypopharynx. broad, triangular. '?he maxillae (fig.



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