222 
DISEASES OF THE COTTON" PLANT. 
with a very pointed head, and fastened to the branch or 
leaf by the tail, and by a thread fastened at each side and 
passed over its back. 
This butterfly is about an inch and four-fifths across the 
expanded wings, which are of an orange color, with a broad, 
black border around the edges. 
The Aeqynnis Columbina. 
The caterpillar of another butterfly is often found on 
cotton plants, where it has wandered from its natural food, 
which consists of the wild passion-flower, so often found 
growing as a weed amongst the crops. It is about an inch 
and two-fifths in length, of a bright-chestnut color, with two 
longitudinal black stripes along the sides, and a broken line 
of yellowish white inside of each black stripe ; it has two 
long, projecting, black horns, or protuberances, on the first 
segment of the body. When about to change, it selects a 
place under a leaf, branch, or fence, where it spins a small 
spot of silk, to which it suspends itself by its hind-legs ; the 
skin of the fore part of the body then splits open, and the 
chrysalis makes its appearance, also hanging suspended by 
means of several small hooks, with which the end of the 
tail is furnished, and which, during the disengagement of 
the skin, becomes entangled in the silk. 
The chrysalis is about seven-tenths of an inch in length, 
of a pale, whitish gre.en, containing black marks and 
brilliant metallic, golden spots. These chrysalides, how- 
ever, together with those of the great American frittellary 
butterfly, are often destroyed by the larvae of a small fly. 
The butterfly makes its appearance in summer in a few 
days, and measures irom two inches and a half to three 
inches across the expanded wings. It is of a bright 
chestnut-brown, barred and spotted with black. 
