HICKORY APHIDS. 323 
99. Phylloxera depressa (Shimer). 
Forming depressed galls on leaves of Carya alba, the galls opening below with a 
constricted mouth fringed with filaments. Daktylosphoera coniferum Shimer is, in all 
probability, Riley claims, the same. (7th Rep. Ins. Mo., p. lib.) 
100. Phylloxera conica (Shimer). 
Forming galls similar to those of P. depressa, but without the fringe. (Probably 
the same, Riley claims.) 
101. Phylloxera caryw-gummosa Riley. 
Forming pedunculated ovoid or globular galls on the under side of Carya alba; the 
gall white, pubescent, and gummy or sticky, opening below in a fibrous point. 
The eggs are almost spherical, pale, and translucent. Larva, mother-louse, and 
pupa quite pale, the red eyes and eyelets strongly contrasting. (Riley, 7th Rep. Ins. 
Mo., p. 118.) 
102. Phylloxera caryce-ren Riley. 
Forming numerous more or less confluent mostly reniform galls on the petiole and 
leaf-stems of Carya glabra ; the galls varying from 0.2 to 0.7 inch in diameter, pale 
green and densely pubescent, aud opening in a slit the whole of their length, trans- 
versely with the axis of the petiole. (Riley. ) 
103. Phylloxera caryce-fallax Riley. 
Forming conical galls thickly crowded on the upper surface of the leaves of the 
Carya alba. Strongly resembling P. caryw-folia, but the height one-third greater 
than the basal diameter, and opening below, instead of above, in a circular fuzzy 
mouth. (Riley.) 
104. Lachnus caryoj (Harr.) 
Stylo nullo, corniculis brevissimis, corpore cinereo, dorso nigro-maculato ; femoribus 
brunneis, tibiis, tarsis antennisque nigris. 
Larva. — Body with a cinereous pruina, which is somewhat evanescent on the thorax, 
so as to exhibit the black color, more or less, on this part. Dorsum of the abdomen 
with four longitudinal rows of transverse black spots (or four on each segment). 
Style obsolete ; cornicula very short, tuberculiform, rostrum extending only to the 
middle of the third segment ; wings fuliginous, bases ferruginous brown, dilated, 
costa and nervures black ; legs black, hairy, the posterior tibiae remarkably so ; 
femora, except at tips, ferruginous brown. Length of body .25, of upper wings, .35, 
of body and wings when at rest .43, expansion of wings .72 of an inch. 
Larvae, pupae, and winged insects found on the limbs of the Carya porcina, July 1, 
1831. (Harris' Corr.) 
105. TlIE HICKORY GAY-LOUSE. 
Monella caryella (Fitch). 
Scattered upon the under side of the leaves, a small pale-yellow plant-louse with 
white antennae alternated with black rings and pellucid wings laid flat upon its back, 
its abdomen egg-shaped, somewhat flattened, aud with only minute rudimentary 
honey-tubes. (Fitch.) 
106. The dotted-winged gay-louse. 
Callipterus? punctatellus Fitch. 
A plant-louse like the preceding, but with black feet and a black dot on the base 
and another on the apex of each of the veins of its fore-wings. The stigma is salt- 
white, with a brown streak at each end ; the second vein is wavy, and at its tip is 
