ARTICULATA. 291 
called “caterpillars,” have a worm-like form, and from 
one to five pairs of abdominal legs, in addition to the 
six on the thorax. 
The mouth is 
formed for mas- 
tication, and (ex- 
cept in the larvee 
of Butterflies) the 
lip has a spinner- 
et connected with 
silk-glands. 
There are three 
groups: the gay 
Butterflies, having 
Fia. 265.—Vanessa polychloros, or ‘‘ Tortoise-shell But- 
terfly.” 
knobbed or hooked antenne, and flying in the sunshine 
only; the dull-colored Sphinges, with antenne thickened 
Fig. 266.—Moth and Larva of Attacus pavonia-major. 
