52 2 



PSYCHE. 



[September 1S93 



of the palpi and of the fore legs dusky. 



Oedemasia pera.vgulata H. Edw 

 1 J 1 . Tvpe, Colorado. A very distinct 

 and good species. 



Oedemasia salicis i $ . Type, 

 California. I also have a $ given me 

 some years since by Mr. Edwards. I 

 cannot after repeated examination really 

 perceive any differences between this 

 and the eastern concinna ; it only differs 

 in size, being a little larger, and with 

 slightly more pointed fore wings, as 

 one would expect to find it, in accord- 

 ance with the facts pointed out in my 

 Monograph of Geometrid Moths (p- 

 5S7) where a list of twenty-five species 

 of Geometrids which grow larger on the 

 Pacific than the Atlantic coast is given. 



Oedemasia eximia Grote. I have 

 been unable to find any valid distinc- 

 tions between this and concinna (also 

 salicis), except that the insect is larger, 

 and the fore wings more produced 

 towards the apex. The females of the 

 normal concinna differ notably from 

 the males in having pale chocolate hind 

 wings, while in the males they are 

 white, with a dusky patch at the inter- 

 nal angle. The three above mentioned 

 so-called "species" also agree in having 

 a similar distinct round discal dot. 



Oe. BADiAPack. is a distinct species, 

 and differs from Oe. concinna in the 

 long linear discal spot, outside of which 

 is a dark reddish brown shade. There 

 are also distinct scalloped reddish brown 

 lines at the base, and beyond the discal 

 spot. The thorax is also darker red. 



Oe. perangulata H. Edw. Tvpe 

 from Colorado. This is a distinct, well 

 marked species. 



On re-examining the venation and 

 other imaginal characters I am at 

 present unable to perceive any impor- 

 tant generic differences between Oede- 

 masia and Schizura, and probably the 

 species of the former will have to be 

 merged with those of Schizura. 



Schizura edmandsii (Pack.). This 

 is evidently a synonym of 6\ tinicornis. 

 The specimen ( $ ) marked edmandsii 

 in Mr. Edward's collection appears to 

 be only a small unicornis with nar- 

 rower wings than usual. The only 

 difference is in the dusky tawny costa of 

 the fore wings, and the similarly tinted 

 hind wings, due perhaps to imperfect 

 preservation. 



S. conspecta (H. Edw.). 1 $. 

 Type, California. This is only a cli- 

 matic variety of •S'. unicornis', the posi- 

 tion of the markings is identical in the 

 two forms, but conspecta is larger, the 

 fore wings as much produced as in any 

 of unicornis. The pale area on the 

 outer third of the wing is clear and 

 whitish, and the hind wings are clearer 

 and whiter than in any eastern example 

 of unicornis. 



S. telifer (Grote). This is only a 

 variety of 5". ipomeae, with two long 

 distinct black streaks, one passing 

 thi-ough the discal spot, and the other 

 extending along the submedian vein. 



Janassa coloradensis H. Edw. 

 Type. 3 $, Utah A climatic variety of 

 jf. lignicolor. It is wdiiter, paler, freer 

 from dark scales, probably due to living 

 in a drier climate, flying over a paler 

 soil, under a clearer sky. Yetan individ- 

 ual of J r . lignicolor from Georgia, in the 

 same collection, comes very near it. 



