S6 
black tip. The antenne are six-jointed, (apparently seven), the sixth 
with a setaceous tip three times as long as the basal part of the 
joint. The sixth joint is the longest, the third next, the fourth and 
fifth nearly equal. All except the basal joint are marked with im- 
bricated transverse ridges. The wings are more than twice as long 
as the abdomen, hyaline, with stigma and veins dusky yellowish. 
The tail extends beyond the tip of the body. Width of thorax .022 
inch, of abdomen .03 inch, of head .014 inch. Length of body 
.054 inch, of antennz .052 inch, of cornicles .009 inch. 
PUPA. 
Fig. 12.—Melon plant-louse (Aphis cweumeris, n. s.) Pupa. 
Head and prothorax, base and tip of antenne dusky, eyes dark 
red, sides of mesothorax and metathorax white, wing pads black, 
abdomen brownish-yellow, except posteriorly, where it is green. 
Whole body pruinose, legs white, tarsi and tips of tibize black. 
