98 
I believe, on the upper side. I am not positive in reference to this 
last point as my notes taken at the time omit to' mention which side 
of the leaf they occupy, but my recollection is quite distinct as to its 
being the upper side. The young appear to be confined to the stem. 
I found them only on very young bushes but a foot or so in heigth; 
in the middle of July (15th to 20th). 
• Wingless individuals —Of a nearly uniform purplish color, the young 
quite pale, the older and mature individuals darker but more or less 
translucent, with a slightly pruinose coating. Head and tip of the 
abdomen dusky; a slightly impressed line along each side of the 
abdomen near the margin. Honey-tubes cylindrical, reaching about to 
the tip of the abdomen; tail distinct; beak reaching slightly beyond 
the middle coxae. Form regularly ovate; length about .05 of an inch. 
Eyes black. Some specimens have the front and tip either pale or 
about the same color as the abdomen. When crushed they give a 
reddish or dull orange color. 
Winged individual. —(probably female). Head and thorax black; ab¬ 
domen* pale purplish, marked along the margin with pruinose or 
powdered spots, two similar spots also on the base of the abdomen 
immediately behind the thorax; tip of the abdomen dusky; there are 
about four "of the lateral pruinose spots anteiior to the honey-tubes on 
each side, and two behind them. Antennae very slender, reaching 
only to about the middle of the abdomen, dusky. Legs pale ex¬ 
cept the knees, tips of the tibiae and the tarsi, which are dusky. 
Wings of the usual form and venation, transparent with a slightly 
smoky shade when seen in their usual erect position in the living in¬ 
sect; the stigma pointed at the tip; fourth vein regularly curved; third 
vein obsolete at-the immediate base; veins dark except the sub-costal, 
which is pale. Length of body about .06 inch; to tip of the wings, .09 
of an inch. 
Aphis impatientis. Thos. The Touch-me-not Aphis 
This species was found at Carbondale, Illinois, in August, infesting 
the wild touch-me-not ( Impatiens fulva.) I know very little in refer¬ 
ence to its habits. * 
Winged individuals. Antennae nearly as long as the body, reaching 
about to the base of the honey-tubes; pale and dusky alternately; 
third joint pale at base, rest dark; fourth pale except at the imme¬ 
diate tip; basal half of the fifth pale, dark from thence to the tip 
of the last joint. Head black; prothorax pale brown, rest of the tho¬ 
rax shining black; abdomen pale brown; honey-tubes of medium length, 
black; tail rather short, dull yellowish. Veins of the wings brown; 
stigma rathe? large, opaque and pale brown; iridescent. Tibiae pale 
yellow. 
Length of body .10 of an inch; to the tips of the wings .18 of an 
inch. 
Wingless specimens , purplish-brown. Pupae pale brown; thorax dull 
yellow; wing-cases whitish; legs and antennae pale, transparent; broadly 
oval in form. 
This species belongs to Aphis in the restricted sense. 
