having been found, and this wingless and doubtful. Therefore, sup¬ 
posing our species to be identical with that found on the rose in 
England, I will give briefly the characters and history as found in the 
writings of English and other European entomologists. The wingless 
viviparous female is about one-eighth of an inch long, of an elongate 
ovate form; shining green or reddish; antennae as long or longer than 
the body; honey-tubes long, reaching beyond the tip of the abdomen; 
tail prominent, yellow; eyes red, legs long, yellowish green, with black 
knees and feet. The winged female has the head and thorax shining- 
black; eyes red; antennae longer than the body, dark; abdomen green, 
with about live black dots on each side in advance of the honey-tubes 
and usually two short transverse black bands behind them; tail yellow, 
hairy; wings large, sub-costal vein yellowish, other veins dark, stigma 
greenish; honey-tubes black. 
There is also a reddish brown variety, the species being cpiite vari¬ 
able. They are found on the tender shoots, leaf-stalks and flower-stalks 
bf the rose, especially the last, where they sometimes congregate in 
large numbers. 
There is also another species which infests rose-bushes in Europe, 
which is quite distinct from that just described. This is the Siphon- 
ipflora rosarum. Koch—and is easily distinguished from the former 
ay its shorter antennae, shorter honey-tubes and legs, and by the body 
)f the wingless female being studded with tufts of hairs. I am not 
iware that this species has been seen in this country, though it is quite 
Possible it is found here* 
Siphonophora avenge, Fab. The Grain Aphis. 
-This species, which has long been known on wheat, oats, barley and 
rye, has doubtless been imported from Europe, where it has been de¬ 
scribed under various names, as A. avence , Fabr.; A c/ranaria , Kirby; 
1 .cerealis, Kalt., and A. hordei , Kyber. Occasionally of late years, 
jt has become quite too common upon the wheat^rops of our Illinois 
farmers, sometimes considerably affecting the yield of this cereal. In 
I860 it appeared in various parts of the state in sufficient numbers to 
lo considerable damage; and again in the fall of 1876 it made its ap¬ 
pearance on the young wheat in Illinois. 
They are seen during the season in three different forms, the wing- 
d females, the wingless females, which are far more numerous than 
he winged ones, and the young wingless larvae. Pupae, with minute 
udimentary scale-like wings, may also occasionally be seen. They 
re furnished with moderately long hon^y-tubes, and the females have 
Iso a distinct ovipositor or tail-like process at the end of the body; 
he males are destitute of this process. 
In England according to Curtis, this species presents the following 
haracteristics: 
The wingless female varies in color, being red, green, brown or yel- 
;>w; the front is convex in the middle, with a distinct lobe on each 
ide; antennae black, nearly as long, or longer, than the body; knees, 
irsi and tips of the tibiae, black. 
