MEMOIRS OF TUB NATIOJ^AL ACADEMY OF SCIENCES. 
IS 
Fig. 31i represents the freshly hatched larva of Hepialus mustelinns, 1.3 mm. in length. The 
head is no wider than the prothoracic segment, whose dorsal plate is well developed. The mouth- 
parts are quite large, especially the spinneret, while the hairs, which are acute at the end, are in 
this stage as long as the body is broad. Fig. 31i, A shows the arrangement of the one-haired 
tubercles on the thoracic and first abdominal segment, and fig. 31i, B those on the four terminal 
segments. The abdominal legs appear to have at this stage only ten crochets, or at least 
very few. 
Fia. 32. — 1, 2, FuU-fe<l larva of Sepialus humidi; 3, 4, H. hectus. 
(Ctit loaned l)y the York Entomological Society.) 
Fia. 33. — Pupa of Oncopera intricata; 
A, end of body enlarged; sp, spiracle. 
Fig, 32i , 2 represents the larvti of the European Hepialus liuuiuli^ and. the arrangement of the 
one-haired tubercles 5 the prothoi*acic plate is thin and slight. hectus (fig. 323 , 4 ), which is more 
specialized, the prothoracic idate is more developed, and the piliferous tubercles (excex)t oue) are 
much larger, formiug jdates. Yet this larva will be seeu to be much less sxiecialized than that of 
^ For blown specimens of this anti Hepialus heotnsj and numerous other rare specimens of other larvaj and pupie, 
I am greatly indebted to the kindness of Dr. O. Staudingerj who presented them to me from the immense collection 
of Lepidoptera and other insects in his establishment at Blasewitz-Dresdeu, Germany. 
