166 



labelled 'Calif. No. 9615'. These two types represent but a single 

 species and unfortunately pacifica, the much more appropriate name, 

 must sink as a synonym. A bred series before us from Alameda Co., 

 Calif., shows that considerable variability occurs in the distinctness 

 of the orbicular and reniform which may or may not be outlined in 

 black. It is quite possible that the 5 cotype of frigida in the Smith 

 Collection should be referred to felina Grt. as it is labelled 'Sierra 

 Nevadas', also the specimen from Truckee received from Prof. French 

 which has probably been destroyed by Anthrenus larvae. Felina is 

 evidently a high altitude species distinguished by its heavier gray scal- 

 ing on primaries and of which cyanescens Hamp. is probably the north- 

 ern form and turpis Sm., metra Sm., and amicora Sm. various Rocky 

 Mt. races of rather dubious value. Our figures show typical $ and $ 

 of frigida and a 9 of felina (PI. XIII, Fig. 3). 



A. arioch Stkr. 



The type specimen of this species, described ostensibly from New 

 Orleans seems to be nothing but a slightly suffused specimen of the 

 common European megacephala; there was presumably some error in 

 labelling or else the specimen was brought over in the pupal state with 

 shrubs or fodder. In any case we see no reason for retaining the 

 name on our N. American list. 



Arzama obliqua Wlk. 



In the summer of 1915 we received pupae of an Arzama species 

 from the vicinity of Newark, N. J., sent by Mr. H. Brehme of that 

 city. The resulting series of specimens showed certain constant points 

 of difference as compared with obliqua Wlk. which led us to suspect 

 that an undescribed species had been unearthed. Again this summer 

 (1916) Mr. Brehme sent us further specimens as well as two pairs 

 of typical obliqua taken in a slightly different locality near Newark. 

 It seems fairly evident that owing probably to certain local conditions 

 (which we must leave to Newark collectors to investigate) that a 

 rather well defined race or species has developed for which we would 

 propose the name Arzama brehmei in honor of its discoverer. 



The type of maculation is essentially the same as in its ally obliqua 

 but the general color of the primaries is much deeper brown, the basal 

 area less strikingly white and the median shade is always well defined 

 whereas in obliqua it is very faint and often entirely lacking ; the shape 

 of the primaries is rather chunkier and less pointed at the apex in both 



