1884.] Entomology. 1045 
uated is difficult to say ; as yet I have been unable to find it with 
a hand-lens, It is very common on the oak, from Maine south- 
ward, in August and through September. 
It is a large-bodied, pale green caterpillar, thickest in the mid- 
dle, being somewhat spindle-shaped. The head is moderately 
large, flat in front, subconical, with the vertex high and conical, 
pale green, edged very irregularly with roseate on the sides. 
small double reddish tubercle on the top of the prothoracic seg- 
ment, from which a median white or yellow dorsal stripe, here 
and there marked with roseate spots, runs to the supra-anal plate. 
The anal legs are represented by two slender filaments held out- 
stretched, which are nearly as long as the body is thick. There 
are seven pairs of oblique lateral faint yellowish slender stripes, 
the last pair extending to the sides of the anal filaments, All the 
legs are pale green and concolorous with the body. Length 
4o™ including the filaments. 
_The young before the last moult have much higher prothora- 
ci¢ dorsal tubercles and much larger anal filaments than in the 
adult, and they are tinged with reddish. The cocoon is of silk, 
not very thick, spun between the leaves, and in confinement the 
moths issued in November, though ordinarily not due until June, 
—A. S. Packard. 
on ei ridge, ending on each side in a dark warty tubercle. On 
situated near together. Behind these two tubercles, and situated on 
livid white. The head is marbled with transverse parallel waved 
lines, Length 30-32™™ August 8-9, at Brunswick, Me., it spun 
