THE HICKORY TUSSOCK-MOTH. 
361 
name, signifying fine-liaired, or having a flowing mane, is 
given to it on account of the long tuft of hairs overhanging 
the fore part of the caterpillar like a mane. This moth, in 
some of its characters, approaches to the Lithosians, hut 
seems, in others, too near to the Arctians to he removed 
from the latter tribe, and it is evidently, in the caterpillar 
state, nearly allied to the following insects, which are un- 
doubtedly Arctians, but lead apparently to the Liparians. 
If our Arctians are grouped in a circle, with the larger kinds, 
such as the great American tiger and leopard moths in the 
middle, and the others arranged around them, then will these 
species, which arc here described last, be brought round to 
the Callimorphas, with which the series began, and thus a 
natural order of succession will be preserved. 
During the months of August and September there may be 
seen on the hickory, and frequently also on the elm and ash, 
troops of caterpillars (Plate VI. Fig. 1), covered with short 
spreading tufts of white hairs, with a row of eight black tufts 
on the back, and two long, slender, black pencils on the 
fourth and on the tenth ring. The tufts along the top of the 
hack converge on each side, so as to form a kind of ridge or 
crest ; and the warts, from which these tufts proceed, are 
oblong-oval and transverse, while the other warts on the 
body are round. The hairs on the fore part of the body are 
much longer than the rest, and hang over the head ; the 
others are short, as if sheared off, and spreading. The head, 
feet, and belly are black ; the upper side of the body is white, 
sprinkled with black dots, and with black transverse lines 
between the rings. These neat and pretty caterpillars, when 
young, feed in company on the leaves ; while not engaged in 
eating, they bend down the head and bring over it the long 
hairs on the fore part of the body ; and, if disturbed or han- 
dled, they readily roll up like the other Arctians. When 
fully grown, they are nearly one inch and a half long. They 
leave the trees in the latter part of September, secrete them- 
selves under stones and in the chinks of walls, and make 
40 
