82 
Dr. Fitch’s short discription is as follows: 
“Black; the breast and abdomen pale yellow, tip black. Larva and 
pupa pale, with a green or black stripe on each side of the back 
parallel with the outer margin. Length JO inch. Found on the under 
side of the leaves of the barberry.’’ 
Kaltenbach’s species, as given 'by Koch, is as follows: 
Winged viviparous fema.le .—Antennae reaching about to the base of 
the honey-tubes. Honey-tubes, extending to the tip of the abdomen, 
and considerably swollen in the middle. Tail minute. Geneial color 
pale buff or yellow; antenna? pale at base, remainder dusky; eyes black. 
Wingless female .—Antennae short not reaching to the middle of the 
body, pale dull yellow; eyes black; legs and honey-tubes dull yellow; 
body pale rusty red. Size about the same as that given by Dr. bitch. 
Genus Hyalopterus. Koch. 
This genus is closely allied in some respects to Aphis , and in 
others to Gallipterus. . . 
The antennae are situated on tubercles which brings it into the sec¬ 
tion now under consideration, but in a strictly natural arrangemenit 
should fall below Aphis and between that genus and Callipterus. 
The characters v were very briefly and imperfectly given by the author 
of the genus, but from the species he included we may judge them 
to be as follows: 
Antennae seven-jointed, situated on frontal tubercles; third joint 
usually longest; seventh sectaceous, sometimes as long as the third and 
sometimes scarcely longer than the sixth. Beak quite short. Wings 
as in Aphis , but thin and delicate as in Callipterus , though not 
marked or clouded as in that genus. Body, especially of the winged 
individual rather small and similar in form to that of the typical 
species of Aphis. Honey-tubes short, reduced almost to tubercles; 
cylindrical; tail slender, short and inconspicuous. Prevailing colors pale 
o'Veen and greenish yellow, the apterous individuals seldom with black 
markings. 
The relative length of the honey-tubes and the tail appeal to me 
scarcely to justify Passerini’s character of this genus given in his 
Synopsis, and which I have followed with great doubt, as I have not 
had an opportunity of examining specimens. 
The following species, which belong to this genus will probably be 
found in this country: 
Hyalopterus pruni. Fabr. 
Syn. Aphis pjruni. Fabr. . 
This species is distinct from the Aphis pruni of Koch which is 
elsewhere described. I can only add here that the winged individuals 
are rather small, the head and thorax dusky or black; abdomen very 
