107 
nifier. The stigma is semi-transparent and pale in the middle, but is 
crossed obliquely at each end by a brown band: The costal and sub¬ 
costal veins dark brown and remarkably parallel from the base to the 
stigma. In another specimen the brown bordering to the veins is al¬ 
most obliterated. 
Pupaf —Antennae seven-jointed, if on a tubercle this is not very 
apparent, but appears to be indicated in some specimens; third joint 
nearly as long as the fourth and fifth united; fifth a little shorter 
than the fourth; sixth a little over half the length of the fifth; sev¬ 
enth about as long as the fourth, cylindrical but not tapering; in the 
alcoholic specimens pale with dark wings at the joints. The two 
basal joints of the antennae have a strong spiny hair on the inner 
margin, the front of the head bears a few similar hairs; the body, 
especially the abdomen, more or less hairy, these hairs being more or 
less capitate. 
Honey-tubes shoit, the length scarcely equaling the diameter. The 
body fusiform, abdomen rather small and tapering. Alcoholic speci¬ 
men pale yellow; eyes red. 
It is barely possible that the specimen here described as a pupa is 
in fact, a wingless adult. . 
Wingless specimen. —Hairy, and in this respect similar to the pupa? 
(winged specimen not hairy). Antennae nearly as long as the body; 
in what is described as the pupa they are longer than the body. The 
abdomen large in proportion to the rest of the body, and instead of 
tapering from the base enlarges to the middle, and gradually rounds 
to what appears to be a broad tail. 
Size; length of body of winged specimen, .06; to tips of wings .11 
inch. 
Prof. Bundy says in reference to them: “Female, pale yellowish, 
abdomen with a transparent greenish tinge slightly orange on the head 
and thorax. Found at Sauk City, Wisconsin, on the oak, in June; 
scattered: 
I think there can be but little doubt that the specimens here de¬ 
scribed belong to Mr. Walsh’s Aphis bella. For the purpose of com¬ 
parison, I add here the original description of the latter: 
“Aphis Bella .—Oak leaves? Bright yellow. Eyes black; antennae 
with the tip of joints 3-6 black. Prothorax as' long as the head with 
•a lateral black vitt.a; thorax with a black vitta extending from its 
anterior angle to the base of the front wing. Honey-tubes scarcely as 
long as the tarsi, generally immaculate, sometimes tinged with fuscous. 
Legs long, black except the base of the femora and the coxae. Wings 
hyaline; front wings with the entire costa as well as its nervures 
black to the tip of the stigma, whence there extends a marginal dusky 
vitta, as wide as the costa at base and middle but tapering at tip, 
nearly as far as the middle branch‘of the third discoidal vein; this 
vitta covers the entire length of the fourth or stigmal vein, which 
terminates half way between the tip of the stigma and the apex of 
the wing, is slightly and gradually curved, and encloses a marginal 
cell not wider than the costa; hind wings with a costal dusky vitta 
extending to the tip of the wing, the sub-costalvein sometimes black; 
remaining veins of both wings slender and pale-dusky, narrowly bor¬ 
dered with sub-hyaline where they traverse the terminal dusky vitta 
of the front wing. Length to tip of wings .15 inch. 
