Catalogue of North American Sphinges. 285 
larly, and turned back to back when at rest. Only one pair of spurs to the hind- 
legs in the greater number. Thorax moderate ; abdomen rather slender. Flight 
rv with sixteen feet; transformation in the open air. Pupe angu- 
a and fastened by silken threads, or ovoid, and enclosed in an imperfect co- 
Section Il.—Sphinges. 
Antenne thickened in or just beyond the middle, tapering at each end, and 
most often hooked at the tip; more rarely slender and nearly setaceous, with a 
The Sphinges may be divided into two tribes. 
Tribe L—Sphinges legitime. 
Larva colored, naked, for the most part horned on the tail, and feeding on the 
hed of plants ; or whitish, slightly hairy, not horned, and living on woody mat- 
mh can the stems of plants, Antenne of the winged insects tipped with a mi- 
® bristly tuft.* Palpi (except in the Ageriade) with the third joint minute 
‘nd indistinct, 
Tribe I].—Sphinges adscite. 
Larva, always colored, more or less hairy, never horned, feeding on leaves, and 
A sforming in a silken cocoon, which is fastened to the plants on which they live. 
ntenne of the winged insects not tufted at the end. Palpi distinctly three-jointed. 
The first tribe, or Sphinges legitime, may be divided into three families. 
Family I.—Sphingiade. 
Antenne fusiform and prismatic ; ending in a hook, and, in the males, trans- 
Yersely biciliated beneath ; or, more rarely, curved, and, in the males, bipectina- 
in the Smerintht. 
* TR Thee fet + Tot 
S 
