118 Journal New York Entomological Society. [Vol. xm. 



in the genus Hesperia, section Pyrgus, although it directly contradicts 

 his diagnosis. We have no species of Hesperia in America ; all our 

 species have the costal fold in the male. Syrichtus falls in Heliopetes 

 on the presence of the hair pencil on the hind tibiae. 

 H. philetas Edwards. 



Described from one female from western Texas. From this type 

 the generic position cannot be ascertained ; but Dr. Barnes has given 

 me a male fron Huachuca Mts., Arizona, which he has identified as 

 ■bhiletas. It resembles syrichtus above and has the hair pencil ; below 

 the hind wings are nearly entirely white. 



Genus PYRGUS Hubner. 

 P. montivaga Reakirt. 



Occurs throughout the United States. We have been listing two 



species, montivaga Reak. and tessellata Scudd., but Mabille unites 



them, following Godman and Salvin. 



Genus HESPEROPSIS, new. 



Much as in Hesperia Fab., but the palpi long, with long, distinct, 

 porrect, terminal joint. No costal fold in the male ; no hair pencil on 

 hind ti biae ; two pairs of spurs. Club of antennae ovoid, gently 

 curved, the tip blunt and bare. Wings broad with entire margins. 



Type. — Pholisora alph&us Edwards. 



Syni ipsis < >i' Species. 



1. Fiirt- wings blackish with white spots 2. 



Fore wings gray irrorate, black dashes in subterminal space alpheeus. 



2. Under side of hind wings with many white spots libya. 



I rider side of hind wings with a single distal bar lena. 



H. libya Scudder. 



Occurs in southern California and Arizona. 

 H. lena Edwards. 



The types were from Montana. This may be a variety of libya as 

 I learn from consulting with Dr. Skinner. I have not seen any cer- 

 tainly determined specimens. 

 H. alphaaus Edwards. 



( )i curs in Arizona. Mabille places these species in Pholisora with- 

 out comment, although they contradict his diagnosis in the absence 

 of the costal fold and the shape of the club of the antennae. Cod- 

 man and Salvin also leave alphaus in Pholisora; but they express 



