Walker makes his species identical with the A. laetuem of Linnaeus 
and A. ribis-nigri of Mosely, and describes it as follows: 
u Winged-female. —Grass green; head and chest black above and be¬ 
low; fore border and hind border of the fore chest (prothorax) green; 
a row of black spots on each side of the abdomen; feelers black, a 
little longer than the body; mouth (beak) pale yellow; with a black tip; 
nectaries black, as long as one-fourth of the body; legs pale yellow, 
rather long; feet and tips of thighs and shanks black; wings colorless, 
much longer than the body; wing-ribs and rib-veins pale yellow; brand 
(stigma) pale buff; branch veins brown, their tips slightly clouded. 1 
Another variety is described by him as yellowish green, varied with 
pale red. Another as small and gray, with black on the thorax; honey- 
tubes yellow. A variety of the wingless female as small, oval, 
smooth, dull black or red," dark green toward the tip of the abdomen. 
Passer ini describes *his A. laetuem as new or at least distinct from 
any previously described under this name, marking with doubt the 
Aphis laetuem of Schrank as synonymous. 
“ Wingless-female. —Green, oblong-ovate, convex; abdomen manifestly 
annulate with white-powdered incisures; honey-tubes greenish-yellow, 
fuscous at the tips; tail greenish, ensiform, and half the length of the 
honey-tubes. 
“ Winged-female. —Pale green, when young somewhat purplish, the 1 
dorsum transversely rugose; antennae fuscous, first and second joints 
srreenish white; wings hyaline, veins fuscous, subcostal vein and stig- 
ma dull greenish. 
“Pupa and wingless individuals similar, wing-cases powdered with * 
white. 
“Differs from S. malvm in the powdered marks on the abdomen, 
and in the longer tail. 
“Found on the bracts, peduncles and flowers of Laetuem sativa and 
L. virosm , in Autumn. 
“Walker, under his A. laetuem seems to confuse this species with 
llhopalosiphum laetuem. Kalt. 
Buckton adopts Kaltenbach’s species as the true one, considers it 
as synonymous with Passerini’s, and describes it as follows: 
“ Wingless-female . —Length .075 inches. Bright green. Some speci¬ 
mens more or less clouded with pink. Long oval. Head and thorax 
rather broad; distinctly separated from each other. Antenna* green, 
with paler basal joints. Vertex pointed and tufted. Abdomen domed, 
wrinkled and shining, with seven black dots within the edge of the > 
connexivum. Cornicles thin, green, black at the tips. 1 ail long and 
yellow. Legs green, with black femora joints. Tibiae points and tarsi 
black. The posterior rings are pilose, fcaltenbach and Walker s' 1 ate 
that the cornicles are thicker in their midst. 
“The Pupa varies much in color, such as green, brown or pink. 
r I he larva much ringed and shining. Wing-cases green with black 
tips. The carirue of the abdomen green and corrugated. Legs shorter 
than in the larva or imago. The pink varieties often have a green 
dorsal band and faint lateral stripes. 
“ Wmged-Jemale. —Expanse of wings .29 inch, length of body .09 
inch. Head, prothorax and thorax shining black or dark brown. Ab- 
