138 E. T. CRESSON. 



following segments have fasciae of silvery pubescence ; the apical seg- 

 ment pale testaceous." 



Hah. — ''Warm Springs, South Carolina." Not seen. 



Genus CEROPALES, Latr. 



Head transverse, wider than the thorax, sometimes compressed ; an- 

 tennae thickened, not convolute iu the 9 5 labrum exserted. Thorax 

 gibbous; scutellum prominent; metathorax short and inclined. Winga 

 with one marginal and four submargiual cells; marginal cell long, 

 la'uceolate; second submarginal cell generally elongate-quadrate, some- 

 times regularly quadrate, receiving the first recurrent nervure beyond 

 the middle; third submarginal large, much narrowed towards the mar- 

 ginal, receiving the second recurrent nervure before the middle ; the 

 fourth submarginal cell extending to the apex of the wing. Legs stout, 

 entirely or almost destitute of spines ; posterior legs very long. Abdo- 

 men ovate, convex, subsessile. 



The species of this genus are distinguished from those of Pompllus 

 by having the antenna3 of both sexes porrect and thickened, never con- 

 volute, and by having the posterior legs much longer, sometimes dis- 

 portionately long. 



1. Ceropales bipunctata. 



Ceropales bipunctata, Say, Long's Second Exped. ii, p. 334. 



Female. — Black, more or less sericeous; anterior orbits not reaching 

 the summit of the eyes, yellowish-white ; the clypeus with a small 

 whitish spot on each side, sometimes wanting; antennae as long as the 

 head and thorax, the basal joint with a whitish line beneath; one spe- 

 cimen has a faint yellowish dot on the post-scutellum ; metathorax ab- 

 ruptly truncate behind, the posterior angles with a whitish spot ; wings 

 violaceous-black, paler at tips; legs black, strongly silvery-sericeous, 

 the posterior femora, except base and apex, rufo-ferruginous ; abdomen 

 immaculate. Length 5 — 8 lines. 



Male. — (closely resembles the 9 y ^ut the fece, spot between the an- 

 tennae, clypeus, labrum, and two basal joints of the antennae beneath 

 are yellow ; the posterior orbits have a faint yellowish line ; the poste- 

 rior margin of the prothorax has a yellow line, sometimes slightly in- 

 terrupted in the middle; two specimens have a yellow spot on the post- 

 scutellum, and the front tibias and tarsi are more or less ferruginous; 

 otherwise like the $ . Length 6 lines. 



Hab. — Connecticut, New York, Delaware, Georgia, Illinois, Canada. 

 (Coll. Am. Ent. Soc. and Mr. E. Norton). 



Twelve 9 , four % specimens. Easily recognized by the black body 

 and legs, and red posterior femora. 



