79 
Bright orange with redder sides. Body deeply segmented and car- 
inated. Head very broad. Eyes red. Front convex. Antennae long 
and joints tipped with rich brown. Legs short and stout; femoral tips and 
tarsi brown. Body hirsute. The dorsum is very transparent, and 
shows the oil-globules within the abdomen. These often are disposed 
in regular rows. Rostrum short. The young specimens are lemon - 
yellow, with antennae twice the length of their bodies, and with honey- 
tubes disproportionally large. 
Winged viviparous female .—Length of body ..08 inch. Expanse of 
wings .30 inch. Length of antennae .19 inch, of honey-tubes .025 inch. 
Somewhat linear. Head and thorax nearly as wide as the abdomen. 
Bright yellow. Eyes large and red. Antennae very long, more than 
twice the length of the body. The joints tipped with brown. Two 
thoracic lobes and the scutellum rich sienna brown. Two broad cross¬ 
bars on the abdomen brown. Cornicles very stout. Legs yellow. 
Wings ample. Cubitus, stigma, and veins either green or pale brown. 
Tail inconspicuous. Rostrum short, not reaching to the second coxae. 
The whole insect is hirsute. (Buckton.) Feeds on Acerpsendopla- 
tanus. 
Drepanosiphum? quercifolii, Walsh. 
Syn. Aphis quercifoliw , Walsh. 
Jl 
“ Larva , pale greenish. Incisures of the antennae dusky. Upper 
surface of the body, except the scutel, dusky. Honey-tubes long, ro¬ 
bust, dusky at tip. Legs long, with the terminal three-fourths of the 
femora, the extreme tips of the tibiae, and the tarsi obfuscated. 
“ Imago blackish; prothorax and anterior part of the thorax some¬ 
times varied with greenish; scutellum pale greenish. Honey-tubes two- 
thirds as long as the femora. Legs very long; basal half of femora 
pale greenish/ Wings hyaline; veins brown, third discoidal vein hya¬ 
line at its origin; stigma and sub-costal veins pale yellowish brown; 
extreme tip of the front wings slightly fumose. Length of the wings 
scarcely .2 inch.” “ The antennse attain the extreme tips of the wings 
when the wings are expanded; and the stigma is four times as long 
as wide, and very acute at each end. On oak leaves.” 
Although it is impossible to state positively, from this description, 
the genus to which this species belongs, yet I think it almost certain 
that°it should be placed in the genus to which I have assigned it. It 
is certainly not an Aphis, in the restricted sense, and the plant it 
infests would indicate that it is not a tiiphonophora. 
J 
Genus RHOPALOSIPHUM. Koch. 
This genus is evidently closely allied to Aphis and in a strictly 
natural arrangement should be placed in close proximity. Passerini, 
in his arrangement, places it between Phorodon and Myzus. That in 
