North American Hymeno^ptera. 271 



Body with large^ close-set punctures ; yellow, slightly 

 tinged with green : occiput and antennce, excepting the 

 basal joint beneath, black : thorax quadrillneate with 

 blackj the intermediate lines confluent at the middle, and 

 all united by a transverse line behind and by a slender 

 transverse line at the suture of the first segment, on which 

 the lines do not extend : scutel with a longitudinal black 

 line : metathorax, excepting at base, black : abdomeUj 

 petiole black, about one third as long as the abdomen : 

 tergum moderately arcuated ; each segment having a 

 black band : pleura black, about four yellow spots : pos- 

 Urior pair of feet with their coxae, at tip, maculated 

 band, inferior edge and tip of the dilated thighs, tip and 

 base of the tibiae, black; the thighs are about the size of 

 the abdomen, with six or eight large prominent black 

 spines, the superior one divided into three or four. 



Length less than one fifth of an inch. 



A very handsome species; I obtained it from the pupa 

 of a Thecla. 



2. C. debilis. Dull honey-yellow ; anterior pairs of 

 feet whitish. 



Inhabits Indiana. • - 



Front yellowish towards the mouth ; a black line 

 from the antennse to the vertex : antenncE dusky, paler 

 beneath : thorax punctured, with three black vittae ; scutel 

 with a black line : beneath the petiole are two whitish 

 spines : petiole as long as the posterior coxae, blackish, 

 whitish at the tips : abdomen polished, the incisures black- 

 ish: posterior feet, coxae with a black line on the inner 

 side ; thighs nearly equal to the abdomen ; tibiae whitish, 

 blackish in the middle : tarsi white. 



h three twentieths of an inrh. 



