180 
Journal New York Entomological Society. [Voi. iv. 
a tubercle of the lateral row on joint 5, and the moving up of the spir¬ 
acle • yet it is without stinging spines, the warts are hairy, a primitive 
first stage is present as in no other spined Eucleid, and the arrangement 
of the warts on the thorax corresponds strictly with that of the smooth 
Eucleids, there being three well developed warts on joints 3 and 4. It 
is therefore, a generalized form, a connecting link between the groups 
of Eucleidse and of particular interest. If we disregard its special 
adaptation, which is unique, this form represents the early stem of the 
spined Eucleids, at a time before the primitive first stage was lost, be¬ 
fore the setae had become poisonous spines and while the original num¬ 
ber of warts were yet present on the thorax. It is only slightly removed 
from the stem of the smooth Eucleids, differing from them in the 
specialization of joint 5, the complete coalescence of setae land 11 in stage . 
I, and in the only partial degeneration of the original setae* of the 
warts, which is complete in the smooth Eucleids, but in Phobetron 
advances slowly throughout ontogeny. The number of larval stages 
appears to be abnormally large. I have not specially investigated the 
constancy of this number. 
Affinities, Habits, etc. 
The allies of this larva are to be found in South America. Stoll 
figures the larva of hipparchia exactly like that of pithecium , as far as 
can be seen from the figure. We have also in Florida the species 
beutenmuelleri , which seems nearly allied, though the larva is unknown. 
The habits are in general similar to those of the other Eucleidte. The 
eggs are laid singly, and the larvae live on the under sides of the leaves 
tilHthe last stage, where they rest on the upper side and feed fully ex¬ 
posed. Full grown larvae may be found during September; the eggs 
are laid in July, and there is but a single brood. 
The full grown larva strikingly resembles a part of a dead leaf 
which had fallen on the surface of the foliage. 
For material I am indebted to Miss Morton for the eggs and stages 
I and II, which she obtained from moths bred from cocoons which I 
sent her for that purpose. I have also found the larva as young as stage 
III, at Bellport, Long Island. Mrs. Knopf kindly made the original 
drawings of figures 2 to 7, 13 and 14 of the plate. 
* The primary set* remain on the warts, single; the secondary wart hairs de- 
aenerate and almost completely disappear in the last stage ; the final coating ot . 
fine hairs is, therefore, tertiary, and belongs to the special adaptations. 
