﻿March i895l DvAR. CLASSIFICATIONS OF LePIDOPTERA. 23 



The arrangement is close to that of the bombycoid noctuids 

 but differs in that tubercle v tends to become small instead of iv 

 while in the Noctuidre iv is moved much farther up than in these 

 Eupterotidje. There is also a considerable resemblance to the 

 hairy Notodontians. 



Cnethocampa pinivora. 



Primary hairs less abiiiulaiU than in C. Iterciilcana, the warts smaller and more 

 reduced. Wart i is indistinct on account of its modification for the dorsal tufts 

 which seem to be, in this species, partially replaced by a raised, somewhat ever- 

 sible (?) area of skin which the stiff hair borders before and behind. Wart v very 

 small, almost obsolete on account of the general reduction of all the warts. Sec- 

 ondary hairs more abundant, longer and stiffer than in C. Iicuuleana. 



Cnethocampa processionea. 



Hairs and warts about as in the preceding, the secondary hairs not so wel 

 developed. Dorsal areas not eversible, covered with dense, fine and short down, 

 the posterior stiff hairs scarcely developed at all. Warts iv and v very nearly in 

 line, iv the larger and a very little dorsad to v, which has only one or two hairs 

 and is really absent on some of the segments. 



Cnethocampa pityocampa. 



Dorsal areas eversible (?), downy, surrounded by a ring of soft reddish hairs. 

 Warts greatly reduced, the hairs rather few and no stronger than the secondary 

 hairs which are well developed. Wart iii is rather distinct; the position of iv and 

 v can just be distinguished with a lens, iv the more distinct and dorsad to v. 



Family LASIOCAMPID.F:. 

 In the larvae of this family the primitive first stage has disap- 

 peared. The mature warts are greatly reduced and obscured by 

 secondary hairs, so that I could not obtain sufificiently positive 

 evidence of their arrangement. The series of eupterotids descri- 

 bed above shows beautifully the course which has been pursued 

 in the development of the lasiocampid larva as we see it to-day. 

 Derived from a bombycoid-noctuid, or lymantriid stock, by the 

 suppression of the warts and development of secondary hairs in a 

 manner parallel to that seen in the Eupterotidte^ the typical lasio- 

 campid form has been evolved. Tubercles iv and v appear to 

 have dropped back nearly into line in the first larval stage, probably 

 by degeneracy toward the original primitive arrangement. 

 Clisiocampa fragilis. 



Stage I. Wart i large, sub-dorsal; ii minute, a little caudad and below i; iii 

 small, lateral; iv and v approximately in line, sub-ventral, very obscure; no others 

 seen; no secondary hairs, 



