250 Say^s Descriptions of 



wings blackish-violaceous, with a hyaline literation in the 

 middle ; nervures black ; separating nervure between the 

 first cubital and first discoidal cellules widely interrupted ; 

 second cellule triangular; cubital cellule rather large: 

 metathorax and abdomen bright sanguineous : posterior 



coxa and this;hs bright sanguineous, the intervening tro- 



chanter black ; posterior tibi<£ dull sanguineous, their 

 tips dusky, their tarsi blackish : oviduct nearly as long as 

 the body, ferruginous, with black valves. 



Length over three tenths of an inch. 



At first view resembles Bracon initiator^ F. 



2. ^. limitaris. Black; feet honey-yellow. 

 Inhabits Missouri and Indiana. 



Body black: palpi white: thorax longitudinally in- 

 dented behind the middle : wings nearly hyaline, at base 

 yellowish ; nervures fuscous ; stigma large ; first cubital 

 cellule complete ; second rather large, quadrangular : 

 radial cellule also rather large : feet honey-yellow ; pos- 

 terior pair of tibios wdiitish, their tips and annulus near 

 the base black ; posterior pair of tarsi black. 



Length seven twentieths of an inch. 



Var. ff. Maxillary palpi, first joint black. 



5 Oviduct hairy, decurved, somewhat robust. 



3. B. gihhosus. Black ; nasus gibbous ; terminal 

 joints of the antennae short. 



Inhabits Indiana. 



9 Body somewhat polished, black : nasus with a pro- 

 minent gibbosity : antenncE w^ith the joints of the terminal 

 third not longer than broad : trings slightly fuliginous ; 

 stigma robust ; the abbreviated nervure at base of the 

 stigma very robust and very near to the costal nervure : 

 tergum, second segment at base with tw^o large foveolae : 

 oviduct as long as the abdomen and thorax together: 



