114 [JUXE 



EUPREPIA Germar. 

 Euprepia americana. 



Arctia americana Harr., Rt. Ins. Mass. p. 246. (1S41). 



Harr. in Agassiz. Lake Superior, p. .391. PI. vii. fig. .j. (1850). 

 Walk.. Cat. Lep. B. M. III. p. 607. (1S55). 

 Clem., Proc. Acad. Xat Sei. Pliila. p. 529. (Nov. ISGii). 

 Morris, Synopsis Lep. IST. Amer. Appemlix. p. :VM\. (1860). 

 Saunders, Proc. Ent. Soc. Phila. ii. p. 28. Larva. (186;;). 

 Synopsis Can. Lep. p. 3. (lS6;i). 

 Mass., (Harr. Coll.) 



When compared with the very closely allied E. caja, our species is 

 found to have a much stouter body, and shorter wings. The antennfe 

 of our species are provided with short but distinct pectinations ; in 

 E^ caja they are hardly pectinated at all. In our species likewise the 

 hind wings are yellow, while in the European representative they are 

 plainly orange. 



CALLARCTIA.s 



Front vertically oblong, moderately broad, hairs closely cut. Anten- 

 l\•^e: subsimple, serrated, not pectinated being obsolete ; 9 simple, filiform. 

 Palpi long, slender, porrect, outer third of second joint surpassing the 

 front, third, joint slender acute. Thorax thick and densely pilose. 

 Prothoracic pieces and patagia very distinct. 



Primaries half as long as broad : costa nearly straight ; apex obtusely 

 rectangular; internal angle slowly rounded. 



Secondaries reach to outer fourth of the abdomen : costa straia-ht. 

 apex very obtuse, sub-rectangular ; the outer margin is full and some- 

 what rounded, bent slightly on the 2nd median and on the sub-median 

 fold. Legs slender. Abdomen large and heavy, densely pilose. 



This genus was first established by Grodart. under the name of Che- 

 Ionia, which was previously used for Mammalia in ISOO. As it now 

 stands I would restrict it to the two European species Okelonin fasciafa 

 and pudica^ and to the new Californian species. It is subject to con- 

 siderable variation in the palpi which are very slender in C. fasciata, 

 but stouter and more pilose in C. piulica. and C. ornafa. 



The secondaries in 0. fasciafa are shorter and rounder thm in the 

 other species; and both European species have the abdomen thicker 

 and more obtuse and more finely scaled than in the Californian ornafa. 



*AcaXXoj beautiful, Arctia. 



