58 



IOWA STUDIES IN NATURAL HISTORY 



jmmM 



Fig. 19. Butleria pirus Edw. a. Club of 

 antenna, b. Hind tibia, c. Neueration, d. 



elongate ovate, flattened on its posterior surface, blunt. Pri- 

 maries trigonate with the outer margin rounded, rather narrow. 



Vein 5 intermediate between 4 

 and 6; L. D. C. not tubular, 

 faint. Secondaries rounded ; 

 apex prominent and anal angle 

 slightly produced. Hind tibiae 

 with one pair of spurs; mid- 

 dle tibiae spined. Males with- 

 out secondary sexual struc- 

 tures. Fig. 19. 



1. CARTEROCEPHALUS 

 PALAEMON 



Papilio palaemon Pallas, Reise I, 



471, 1771. 

 Papilio paniscus Fab., Syst. Ent. 



531, 1775. 

 Hind tibia of Carterocephalus palaemon p apiKo Ironies Denn. & Schiff. 



Wien Verz. 160, 1776. 

 Hesperia mandan Edw., Proc. Ent. Soc. Phil, n, 20, pi. v, f. 1, 1863. 

 Hesperia mesapano Scud., Proc. Bost. Soc. Nat. Hist, xi, 383, 1868. 

 Cyclopides skada Edw., Trans. Am. Ent. Soc. in, 196, 1870. 

 Stereoptes skada Edw., Trans. Am. Ent. Soc. in, 214, 1871. 

 Scudder, Butt. New Eng. n, 1569, 1889. 

 Elwes & Edwards, Rev. Or. Hesp. 167, 1897. 

 Holland, Butterfly Book 342, xlvii, f. 1, 1898. 



Canada, Mountains of New England and Rocky Mountains; June. Cal- 

 ifornia, Montana. Europe and Asia. Fort Providence, Mackenzie, July 

 (Cary). Yukon Territory (Winn). 



Genus BUTLERIA Kirby 

 Butleria Kirby, Syn. Cat. 624, 1871. Type Carterooeplwlus 



exornatus Felder. 

 Dalla Mab., Gen. Ins. xvii, 107, 1904. Type Cyclopides eryonas 

 Hew. 

 Very similar in structure to Carterocephalus but with two 

 pairs of spurs on the hind tibiae. Fig. 19. 



Butleria was first characterized by Watson (P. Z. S. 1893, 79) 

 but according to Mabille his description does not fit the geno- 

 type. Mabille in turn characterized the genus to correspond 

 with the typical species in vol. xvii of the Genera Insectorum, 



