June, 1896.] Dyar : Head Sette of Lepidopterous Larv/e. 
93 
within the circle of the eyes above and behind the second ocellus, viii 
is before the second ocellus, and ix is above the base of the antenna. 
The clypeal setae are shown, but not numbered. Figure 2 represents 
C. melsheimerii. It is evident at a glance that the spathulate seta or 
antenna-like appendage is the fourth epicranial seta. The head of C. 
melsheimerii is coarsely roughened with broad rounded pits. All the 
upper setae (namely i and ii on epicranium and the three upper clypeal 
setae) are greatly reduced, only tiny rudiments remaining. Seta iii is 
small but distinct, iv is enormously enlarged and flattened, situated 
above and behind the fourth ocellus. All the lower setae are normally 
developed. 
Cicinnus belongs to the Microlepidoptcra (Tineides), and the exact 
position of its head setae is in many respects more directly comparable 
with other Tineides. For example in Plutella porrectella , seta viii is 
situated before the fourth ocellus as in Cicinnus and not low down near 
seta ix as in the Noctuidous larva shown. However, I have preferred 
to figure the Noctuidous larva, as the comparison is thus given a wider 
scope. 
-♦- 
DESIDERATA OF NORTH AMERICAN NOTODON- 
TIDiE. 
By A. S. Packard. 
The following gaps or desiderata occur in our knowledge of the 
larvae or the life-history of the North American Notodontidae, and at¬ 
tention is drawn to them here in order that collectors and students may 
aid us in filling them up. It is particularly requested that the desired 
