39 
hairy, third joint the longest, the following subequal; sensoria rather indistinct, 
three or four to the third joint, and usually one or two to each of the following. 
Beak reaching abdomen. Honey tubes as circular openings on level of surface of 
abdomen, but rather conspicuous from being bordered with a ring of black. Wings 
hyaline with slender but distinct veins. Fore wings with the cubital obsolete for 
some distance at base ; stigma short and broad ; stigmal vein but slightly curved near 
the base, straight. Expanse of wings, about 5™™. 
Careful descriptions of the different forms on Cornus are given by Mr. 
Clarence M. Weed (Psyche, V, p. 129), the species being referred doube- 
fully to cornicola Walsh. 
Winged viviparous female (pseudogyna pupifera).—Expanse of wings, 6™™; length 
of body, 2™™; width of body, .80™™; length of antenne, .90™™. 
Black above, except anterior and lateral margins of abdomen, and in many speci- 
mens more or less of posterior portion. Beneath black, except prothorax and abdo- 
men (save a black patch in front of anus), which are dull whitish-brown. Rostrum 
black, except a more or less distinct lighter patch near base, hairy, reaching posterior 
cox. Legs robust, black, except a short brownish space at base of anterior femora; 
thickly provided with brown hairs. Antenne robust, beset with brown hairs. Joints 
IT and II, short, smooth; III, long, with row of tubercles on its cuter ventro-lateral 
surface ; IV and V subequal, with tubercles as on III; VI, a little longer than V, ex- 
cavated on its outer lateral surface about two-thirds distance from base. Wing veins 
mostly brown. Stigma brownish, with interior portion darker. 
Described from many specimens taken October 24, 1887, on leaves of Cornus sanqui- 
nea and C. sericea, where for some time previous they had been very numerous, 
founding sexed colonies. Usually occurring on the under surface. 
Apterous male.—Width of body, 0.50™™; length of body, 0.89"™; length of anten- 
n:e, 0.47™™, 
Body and members brownish or brownish-black, with numerous brown hairs. 
Eyes black. Body flattened, long and narrow, with nearly parallel sides. Antenne 
half as long as body. Joint I, short, swollen; II, small; III,longest; IV and V, 
subequal; the latter excavated on its apical lateral surface. Legs long, robust, 
same color as body. Rostrum robust, reaching anterior margin of posterior cox. 
Described from several living specimens (part taken in copula) from Cornus sericea, 
collected October 24, 1887. : 
Oviparous female.—Width of body, 0.50™™; length of body, 1.14™™; length of an- 
tenne, 0.35™™, 
Green, or greenish-brown, slightly darker anteriorly. Shape, elongate oval; sparsely 
clothed with brown hairs. Eyes blackish. Antenne green, slightly darker apically ; 
joint III longest, V slightly swollen in middle. Rostrum robust, green, darker at tip, 
reaching anterior margin of posterior coxie. Legs unicolorous with body, dusky 
apically. 
£gg.—Elongate oval, 0.56™™ long, 0.20™™ wide. 
Green at first, becoming black by exposure. Deposited on bark, in and about the 
axils of buds and small branches. 
Described from many specimens on Cornus sericea, October 24, 1887. 
These descriptions are so full that I deem it unnecessary to draw up 
another. I may mention, however, that the apterous males usually 
have what I should call a purplish tint with the brownish color when 
alive, due, perhaps, entirely to the delicate bloom covering them. 
The most distinctive character of corni is perhaps the hairy antennze 
and the six or seven circular sensoria on underside of the third antennal 
joint. The number of these sensoria varies slightly, but in the form I 
