163 
dusky the antennae are three-jointed, the basal joint thickest and about 
as broad as long, the second joint globular and the third elongated 
and cylindrical, with a projecting point upon one side at the tip. 
When moving about, the antennae appear to be employed as a fourth 
pair of legs, their points being pressed to the surface over which it is 
passing similar to the feet. TEe eggs are small oval shining grains of 
a watery yellowish white color. The young larvae are intermediate in 
size between the eggs and the females, and resemble the latter except 
that they are of an oval form and their beaks are proportionally 
longer reaching to or slightly beyond the tips of their bodies. 
These excrescences are common upon hickory leaves throughout the 
summer season. 
Phylloxera cary^e-globosa. Shimer. 
Syn. Dactylosphcera globosum. Shimer. 
Winged female —Abdomen and prothorax orange yellow; mesothorax, 
head and eyes blackish; legs and antennae dark ciuereous. Wings hya¬ 
line, broad, somewhat overlapping as they lie horizontally on the back. 
Anterior wing evenly rounded on the posterior margin; anterior mar¬ 
gin rather straight, somewhat curved, convex at the middle of the 
stigma, apex quite broadly rounded, the wide wedge shaped base not 
extending beyond the middle; stigmatic nervure nearly straight, termi¬ 
nating in the center of the apex, not visible at either end. The dis- 
coidal within the middle of the wing not visible at its outer end, 
somewhat convex anteriorly, its branch hyaline at its extremities; stig¬ 
ma honey-yellow, darkest on the costal margin, the apical end lanceo¬ 
late; inwardly extending to the base of the wing, all the costal space 
being of the same color. Posterior wing, one longitifdinal vein and 
no discoidal, Tibiae and tarsi with a few scattering hairs; claws palish 
horn-colored, with blackish tips. Length to tip of wings .07 inch; body 
about .025 inch long. 
Wingless female —much resembling the grape leaf louse, Phylloxera 
vitifoliae, but smaller, the dull, pointed promuscis blackish at the ex¬ 
tremity. 
The following list of these species of this genus is from Prof. 
Riley's Seventh Report. 
Phylloxera Rileyi Licht. The Oak-leaf Phvlloxera, 
* 
| 
Living on the under side of the leaves and hibernating on the 
stems of the white, swamp-white and iron oaks, ( Quercus alba ., bicol¬ 
or and obtusiloba). 
P. caryae-semen , Walsh. 
Forming fuscous, minute, sub-globular, seed-like galls on the up¬ 
per side of the leaves of the pignut hickory ( Cary a glabra) which 
open in a small nipple on the underside. 
