101 
green showing on the abdomen. In the winged female the antennae 
are about as long as the body, slightly shorter in the apterous 
individuals; seventh joint very slender and longer than the third. 
Honey-tubes long for this genus, extending beyond the tip of the 
abdomen. Legs somewhat hairy; thighs and tibiae pale at base, black 
at the tips. Antennae and honey-tubes black. Size, rathei laige; 
length of body .10 to .12 inch. 
Dr. Fitch discribes his species very briefly as follows: ‘’Flack; tibia' 
and base of femora pallid; stigma, dusky; nerves black, the furcate one 
hyaline at its base. Length .15. On the underside of the leaves of 
the elder. Male.” 
The measurement doubtless means to the tips of the folded wings. 
It is also more than probable the specimen described was a viviparous 
winged female. 
I have not been fortunate enough to find this or either of the two 
following species, and hence can not decide with certainty as to their 
proper position. 
Aphis cornifoli^e. Fitch. The Dogwood-leaf Aphis. 
• f 
It inhabits the underside of the leaves of the Dogwood ( Cornus 
JPCtmi/G Ltl/CttCL^ • 
The apterous females are black, somewhat powdered or mealy, and 
obovate in form: legs pale yellow, feet black; antennae pale yellow, 
with the tips black; honey-tubes reaching nearly to the tip of the 
truncated abdomen. Length, .05 of an inch to the tip of the abdo¬ 
men. (Fitch.) x. . . 
This is evidently different from the A. corni of Fabncius which be¬ 
longs to another sub-family. 
Aphis cratcegifoli. Fitch. The Thorn-leaf Aphis. 
* 
Found on the leaves of the Thorn ( Crataegus punctata ) which it 
corrugates. Black; abdomen, with a row of blackish dots along each 
side; veins of the forewings whitish, black at their tips; tibiie or 
shanks, except at their tips, and base of the thighs, green; honey- 
tubes, equaling nearly half the distance to the tip of the abdomen. 
Length, .15 of an inch. (Fitch.) 
The length given here by Dr. Fitch I am satisfied is to be under¬ 
stood as to the tips of the closed wings. 
This species is certainly different from A. cratcegi pf Ivaltenbach, or 
the A. pyri Fonscol. with which it is supposed to be identical; it agrees 
with A. cratcegi, Koch in the length of the honey-tubes, but in noth¬ 
ing dse. I think therefore that it is a distinct and true species. 
Aphis medicaginis. Koch. 
As I am informed by Mr. J. Monell, of St. Louis, that he has found 
this species on LeguYninosaz, I insert it here, with a brief description 
from Koch, as I have not seen it. 
