1890.] 
485 
[Packard. 
The dorsal and lateral setae or bristles of the larva, in this stage, 
are all “ glandular hairs,” as they have been well termed by Dr. G. 
Dimmock. 1 They all arise from the conical warts, which seem to 
bear no other kind of setae ; they vary slightly in length, the longer 
ones being nearly as long as the body is thick. These setae widen 
towards the flattened end, which is deeply split or forked. The 
much smaller setae arising from the lower side of the body along the 
base of the legs are minute, very short and tapering. 
Thel^ody is black-brown, but the pro thoracic, and first and seventh 
abdominal segments are pale flesh colored. 
The abdominal legs are rather short and thick, and what is rather 
unusual except in the Cossidae and Hepialidae, the hooks, or cro- 
chets, of which I can count from sixteen to eighteen, form a nearly 
complete circle. The larva moulted June 20th, having been in this 
stage from two to three* days. 
Second stage . — June 20. Length, 4-6 mm. (described from an 
alcoholic specimen 6 mm. long, nearly ready to moult). Head still 
dark brown ; the vertex on each side pale yellowish, and a narrow 
pale transverse line farther down in front ; these lines not being so 
distinct as in the third stage. The general shape of the body has 
not changed, but the piliferous warts are as a rule smaller than in 
stage I, and each gives rise to a single fine tapering short whitish 
hair, which replaces the glandular hair of stage I. (In the Noto- 
dontians these glandular hairs usually persist through the second 
stage.) The two dorsal prothoracic piliferous warts are situated 
nearer together than in the third stage, and the two sub-dorsal ones, 
on the second and third thoracic segments, are larger than those on 
the prothoracic segment, and also larger than any on the abdominal 
segments. 
The suranal spine is not quite so distinctly forked as before, it is 
two or three times as long as broad, and each short fork bears a fine 
tapering whitish hair. Near the base of this spine, the tenth seg- 
ment bears on each side two piliferous warts. The anal legs are very 
short and rudimentary, forming two short obtuse tubercles, which 
scarcely project beyond the body, and bear each a short singular 
tenant hair, which is broad and flat at the end. There are no traces 
VPysche, in, 389, Sept.-Oct., 1882. On some glands which open externally on insects, 
387-401. These glandular setae or hairs appear to be of the same structure as the tenant 
hairs of the feet of adult insects, which secrete a viscid fluid to aid in walking. 
