82 



Figs. 2192/3) should make the species readily recognizable; it is ap- 

 parently much rarer than montivaga although occurring in the same 

 localities. Whether eurynome Edw. and its various forms should be 

 considered as races of mormonia is doubtful ; personally we consider 

 that the presence of considerable green scaling on the underside would 

 point to a distinct species showing much greater affinities to the Alas- 

 kan bischoffi Edw. than to mormonia ; we have already offered a few 

 notes on this species (Cont. N. Hist. N. Am. Lep. II, (3) p. 93) and 

 have nothing further to add. 



A. montivaga Behr. ( PI. X, Fig. 1 ) . 



There seems no doubt but that egleis Bdv. is a synonym of this 

 species ; we have examined the Boisduval types in the collection of 

 M. Oberthur and also the specimens in the Strecker Collection pur- 

 porting to be the types of montivaga and these both are similar ; the 

 species shows all grades of variation on the underside from well-sil- 

 vered forms to those without any trace of silver ; we have a series 

 taken in Truckee, Calif, as early as May 9th and another series taken 

 in the same locality in the first week of July but cannot find any good 

 point of distinction between the two. The species is common all 

 through the higher altitudes of the Sierras. From a study of some 

 of the original type material of oweni Edw. from Mt. Shasta, Calif, 

 it would seem to us that this species is more closely related to mon- 

 tivaga than to hippolyta, as it is now placed, and would represent a 

 darker heavier marked form from the northern end of the same chain 

 of mountains which has gradually developed, due to its isolation, into 

 practically a good species. It is very possible that Behr's series of 

 montivaga contained specimens of mormonia Bdv. ; at any rate mon- 

 tivaga Behr as identified by Edwards, who makes arge Stkr. a synonym 

 (Can. Ent. XI, 52), was evidently mormonia Bdv.; in the same paper 

 Edwards claims to have received the "types" of egleis and mormonia 

 from Boisduval and declares them $ and 9 of one species ; we doubt 

 if these were more than specimens from the type lot, or "cotypes" , as 

 Boisduval would hardly part with his actual types ; in any case it would 

 seem to be both just to Dr. Boisduval and more scientifically correct 

 to consider the specimens still contained in the Boisduval Collection and 

 marked "type" as being the originals of the description ; these have 

 been figured by M. Oberthur (Etudes de Lep. Comp. IX, (2) Figs. 

 2192/5) although it would seem that the figures of egleis are 9 's and 

 not S 's as stated ; there is however no difficulty in determining, by 



