OF NATURAL H18T0UY. 689 



tcrgum with the posterior marjjrin of the first and second seg- 

 ments white; reniainini,' sej^mcnts more or less yeUowish : pleura 

 white, with a black furcate line : pectus and coxae whit« : feet 

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

 tibifO at tip and base blackisli. 



Length less than one-lourth of an inch. 



2. C. DISCITERGUS. — Whiti.sh varied with black ; torguni 

 black, disk white. [232] 



Inhabits Indiana. 



Body white, slightly tinged with yellow : antenna; black : 

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

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

 Bide, confluent upon the scutel, which is also black : mctathorax 

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

 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 tibias 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. 



3. C. CONQUlsiTOR. — Black ; tcrgum with the posterior mar- 

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

 and tarsi with black joints. 



Inhabits Indiana. 



Body black, punctured; palpi white; thorax, punctures 

 minute ; a longitudinal white line before the wings : mctathorax 

 not distinctly punctured on the disk : wings very slightly tinged 

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

 base and tip whitisli ; second cubital cellule oblique : tergum 

 densely punctured on every part; segments on their posterior 

 narrow mar<rins white : oviduct about half the length of the ah- 

 domen : feet honey-yellow ; intermediate and posterior tarsi 

 white, the joints black at their tips ; post<!rior tibia; black, white 

 in the middle. 



Length one-fourth of an inch. 

 1835.] 44 



