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d vertically, as long as the head, in front of which they ascend ob- 
iquely, quite hairy, at least below. Antennae with the knob straight, 
r in a few species slightly bent. Shape of the wings various; the 
dnd wings forming a gutter for the abdomen. The front pair of legs 
hortened so that there are apparently only four legs. Tarsi bifid ex- 
ept in the first species. 
Danais archippus, Fabr — The Archippus Butterfly. 
This, one of our most common butterflies, expands 3.75 to 4.50 
nches; the wings orange brown with a black border containing two 
ows of white spots extending from the middle of the costa to the anal 
ngle. Besides these there are two oblique rows of five larger white 
pots in a black ground near the tip of the fore wing. The veins are 
•lack, the discal cell closed. 
The males are distinguished by an elevated black spot contiguous 
oone of the veins near the middle of the hind wings. Body black 
nth a few white spots on the thorax. 
Larva —Whitish, transversely marked with bands of black and 
ellow. It has two pairs of fleshy, blackish processes of which 
he anterior pair are situated on the second segment, the others on the 
leventh. The larva feeds on various species of milk-weed, or silk- 
peed as they are sometimes called. 
Argynnis diana, Cram—The Diana Butterfly. 
This species, more common in Kentucky and Arkansas, is occasion- 
lly taken in the southern part of Illinois. The wings expand about 
hree and one-half inches. In the male, the wings are rich velvety 
'rown from the base to beyond the middle, the border beyond deep 
range, considerably dentate internally; this contains two transverse 
ows of black points in the fore wings and one in the hind wings. 
?he female is marked the same, but the base of the wings is rather 
ark blue-hlack, having the border blue with black markings like those 
n the male, only more prominent, and an additional black line near 
he outer border. 
Argynnis idalia, Drury—The Idalia Butterfly. 
* 
The larva of this species, like the other Argynnis caterpillars, feeds 
ipon violets, and the butterfly occurs generally in the latitude of the 
lorthern part of the State. 
The perfect insect expands from three to three and a half inches, 
.nd is much darker than the two following species, which are also 
ommon in Illinois. The fore wings are a deep orange, spotted with 
flack and surrounded with a black border, which in the female con- 
