SKINNER AND WILLIAMS 283 



ON THE MALE GENITALIA OF THE HESPERIIDAE 

 OF NORTH AMERICA 



PAPER II 



BY HENKY SKINNER AND R. C. WILLIAMS, JR. 



Attention is called to the authors' previous paper on the 

 larger Hesperiidae.^ 



This paper will treat the remaining species of Hesperiinae in 

 America north of jNlexico and the West Indies, with the exception 

 of those of the genus Thanaos, which have already been re- 

 viewed and most of the valvae figured by Scudder and Burgess,^ 

 Scudder,'' Skinner/ and Lindsey.^ 



We have in general followed the classification adopted by 

 Lindsey.^ We prefer, however, to keep the genera Hesperia 

 and Heliopetes separate, for the reason that they are readily 

 differentiated by their superficial appearance, and while Hesperia 

 is cosmopolitan, Heliopetes seems to l)e strictly neotropical. We 

 also follow Godman and Salvin and retain domicella in Heliopetes. 

 There is no indication in the male genitalia that this species is a 

 connecting link between the two genera, and each of these might 

 be divided into a number of groups in which the genitalia are 

 highly specialized along different lines. 



We follow Lindsey, however, in retaining a rather mixed lot 

 of species in the genus Pholisora. The nuile g(Miitalia show re- 

 markable differences in species that in other characters appear 

 to be closely allied,^ so we do not ])elieve it advisable to break up 

 this genus. 



Further deviations from the usual nomenclature are noted 

 under the species and the reasons giv(ui. 



' Trans. Amer. Ent. Soc, XLvni, pp. 109-127, (1922). 



2 Proc. Bost. Soc. Nat. Hist., xni, pp. 282-306, pi., (1870). 



3 Butterflies of the Eastern U. S. and Canada, (1889). 

 ^ Trans. Amer. Ent. Soc, xl, pp. 195-221, (1914). 



f- Ikill. Lab. Nat. Hist. State Univ. Iowa, ix, (no. 4), pp. 49-55, pi. 2, (1921). 



6 Ibid. 



^ Note catuUus and luejicanus. 



TKANS. AM. EXT. SOC, XLVIII. 



