Packard.] 
544 
[Feb. 19, 
they are more closely allied than any other two genera of the 
group. 
LIFE-HISTORY OF CECRITA (HETEROCAMPA) GUTTIVITTA (WALK.). 
The eggs and earliest stage of this very interesting form have yet 
to be observed and described. My single example of the mature 
larva was compared with specimens with the above names in Pro- 
fessor Riley’s collection, and agree with Doubleday’s figures 3 and 
4 and description in the Entomologist , Jan., 1841. 
Third stage ? — Length 1 5 mm. Beaten from a red maple in Maine, 
Aug. 15. The head is very large, considerably wider than the 
body, and seen sidewise, very large, with the vertex prolonged in- 
to two well marked lobes which rise high above the body ; it is deep 
dull amber in color. 
From the prothoracic segment two enormous dorsal, chitinous 
Fig. 2. Young larva of Heterocampa guttivitta, stage III? Bridgham del. 
antlers, as long as the diameter of the sixth segment, arch over the 
top of the head ; they each have three short branches, or tines : a 
sharp one in front near the middle, and two larger blunt ones be- 
hind on the distal half, the tip ending in a hair. The body is smooth, 
not tuberculated ; the markings of the adult are but faintly indicated, 
and indeed any addition of tubercles or spines or markings would 
be quite useless and add nothing to the bizarre and forbidding ap- 
pearance of this young caterpillar. 
The ninth and tenth abdominal segments are elongated and dis- 
tinctly indicated. The anal legs are very long and slender, the 
reversible ends being drawn in by two retractor muscles with about 
six to„eight hooks, and about as long as the eighth segment is thick. 
The last stage . — Length 30 mm. The head is still high, bi- 
lobed, narrowing towards the vertex, with two black lines in front 
extending from each side of the clypeus and ending on the vertex 
