OF NATURAL HISTORY. Qgg 



tergum with the posterior margin of the first and second seg- 

 ments white; remaining segments more or less yellowish: pleura 

 white, with a black furcate line : pectus and coxse white : feet 

 honey-yellow : posterior feet, coxse with a black line ; tarsi white ; 

 tibise at tip and base blackish. 



Length less than one-fourth of an inch. 



2. C. DISCITERGUS. — Whitish varied with black; terguni 

 black, disk white. r232l 



Inhabits Indiana. 



Body white, slightly tinged with yellow : antennae black : 

 vertex with a black dot on the locality of the stemmata : thorax 

 with an abbreviated black vitta before, and another vitta on each 

 side, confluent upon the scutel, which is also black : metathorax 

 black on the disk : wings hyaline ; nervures brown : tergum 

 polished, black, with a dilated whitish spot in the middle ; 

 broadest rather behind the middle, and tapering to the base : 

 oviduct less than half the length of the abdomen : posterior 

 thighs with a blackish line each side : posterior tibiae blackish 

 at base and at tip. 



Length nearly three-twentieths of an inch. 



Spins an oval, silken cocoon, of a white color slightly tinged 

 with reddish. 



8. C. CONQUISITOR. — Black; tergum with the posterior mar- 

 gins of the segments white ; feet honey-yellow ; posterior tibiaj 

 and tarsi with black joints. 



Inhabits Indiana. 



Body black, punctured; palpi white; thorax, punctures 

 minute ; a longitudinal white line before the wings : metathorax 

 not distinctly punctured on the disk : wings very slightly tinged 

 with dusky; nervures blackish; stigma rather large, with its 

 base and tip whitish ; second cubital cellule oblique : tergum 

 densely punctured on every part ; segments on their posterior 

 narrow margins white : oviduct about half the length of the ab- 

 domen : feet honey-yellow ; intermediate and posterior tarsi 

 white, the joints black at their tips ; posterior tibiae black, white 

 in the middle. 



Length one-fourth of an inch. 

 1835.] 44 



