551 
[Packard. 
rounded, with no traces of warts on the head, which is slightly bi- 
lobed. The prothoracic and first and eighth abdominal segments 
are normal, with no piliferous tubercles , not even on the segments 
specially named. The anal legs are long and slender, but no lon- 
ger than the body is thick. 
The body is green, of the hue of the leaf on which it feeds ; 
along the back is a broad whitish-yellow band edged with reddish. 
There are no subdorsal or lateral lines or other marks. 
RECAPITULATION. 
1. In stages I and II, we have the high prothoracic tubercles like 
those of H. marthesia in its third stage (the earlier stages of this 
species being unknown). 
2. There are no subdorsal or lateral lines in the last stage, and 
as in marthesia , the movements of the anal legs must serve to de- 
ter its enemies from attacking it, being otherwise protected by its 
color which is like the leaf on which it feeds. 
It is evident that by their larval characters this species and mar- 
thesia are closely and generically allied. 
LIFE-HISTORY OF HETEROCAMPA MARTHESIA CRAMER 
(L. TESSELLA PACK.). 
The eggs and two earliest stages of this unusually interesting 
form have not yet been observed. The following notes are drawn up 
from alcoholic specimens in an excellent state of preservation ; I 
think there is little doubt but that the earliest stage I have is the 
third. 
Third stage . — Length of body 15, of the “tails” or stemapoda 
6-7 mm. The head is regularly triangular seen from in front, the 
vertex being high, pointed and slightly bilobed. The body is long 
and slender. On the prothoracic segment are two high slender 
but very broad-based fleshy tubercles, which are probably mova- 
ble, and about as large as the thoracic legs, or one-half as long as 
the body is thick seen from the side ; they rise high over the body, 
being very prominent, and each ending in a stiff dark bristle. There 
are no other tubercles on the body. The segments are deeply 
wrinkled transversely over the back, as in the final stage. The 
head is provided with the lateral yellow stripe of the larva of 
the last stage, and the body has the distinct broad straw-yellow 
slightly interrupted dorsal band of the last stage. 
