THE CANADIAN ENTOMOLOGIST. 363 



C^NOCEPHUS IN AMERICA. 



l',Y J. CHESTER BRADLEY, ITHACA, N. Y. 



Heretofore the genus Ccenocephus, Konow, has been known only 



from Siberia, and by a single species. Two undescribed species from 



western United States occur in Dr. Alex. D. MacGillivray's collection 



(Cornell University), one of them also in the collection of the American 



Entomological Society, and at the request of Dr. MacGillivray I here 



describe them. 



Length ii mm; wings slightly tinged with yellow; second and third 

 abdominal segments in part red Konowi, n. sp. 



Length i6 mm; wings somewhat smoky; second, third and fourth 

 abdominal segments entirely red Aldricki, n. sp. 



Ccenocephus Aidrichi, n. sp. — Black ; legs except coxiie and tro- 

 chanters, abdominal segments two, three and four red ; wings somewhat 

 smoky. Length 16 mm. 



AntenncT almost filiform, slightly thickened mesally, the first segment 

 of the flagellum slightly exceeding the second. Head minutely punctured 

 above. Pronotum subquadrate, deeply notched posteriorly. Wings 

 somewhat smoky, the hind wings without a cubital cell. Posterior tro- 

 chanters and the rest of the legs except the coxye red ; no spines on the 

 posterior tibise. Abdomen rather long, black, the second, third and 

 fourth segments entirely red. 



Habitat — Juliaetta, Idaho. Type in the collection of Cornell 

 University. 



I take pleasure in dedicating this large and beautiful species to the 

 collector, Prof J. M. Aldrich. 



Ccenocephus Konoioi, n. sp. — Black, legs and a band near the base 

 of the abdomen red ; wings stained yellow. Length 11 mm. 



Head black ; clypeus somewhat prolonged and almost truncate, 

 slightly triserrate ; mandibles deeply toothed, yellow ; occiput very 

 minutely punctured, polished, covered with veiy minute black pubescence; 

 flagellum black, eighteen segmented, very slightly thickened mesally, first 

 segment somewhat longer than the second. Pronotum cjuadrate, shining 

 as in the rest of the trunk. Wings stained slightly yellow ; posterior ones 

 without a complete cubital cell. Legs red, or the coxaj and fore and 

 middle trochanters black ; no spurs on the tibi;e before the apex. Abdo- 



