l82 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Abdomen with numerous broad, strongly foveolate transverse 

 impressions Iphiaulax p. 209 



8. Head not cubical, as seen from above at least twice as wide 



as long antero-posteriorly 9 



Head cubical, as seen from above hardly wider than long 

 antero-posteriorly 10 



9. Second abscissa of radius at most hardly longer than first 



transverse cubitus; propodeum always and abdomen usu- 

 ally sculptured throughout Habrobracon p. 209 



Second abscissa of radius always distinctly longer than first 

 transverse cubitus; propodeum rarely sculptured through- * 

 out, abdomen often smooth and polished. .Microbracon p. 204 

 10 Scape at most hardly twice as long as thick, and cup-shaped 



in outline Coeloides p. 210 



Scape distinctly more than twice as long as thick, subcyl- 

 indrical, supported by a much narrower pedicel, lower por- 

 tion cut out so as to engage prominent margins of antennal 

 foramina, apex with its margins emarginate posteriorly, 

 channeled anteriorly with margin between anterior and 



posterior portions produced into a kind of process 



Atanycolus p. 210 



Opius Wesmael. 



Key to Species. 



1. Recurrent vein interstitial or received by second cubital cell; 



second abdominal segment without a transverse impressed 

 line; radius not originating beyond middle of stigma; sub- 

 median and median cells equal or nearly equal in length; 



second discoidal cell closed 2 



Recurrent vein received by first cubital cell; second cubital 

 cell much longer than high, second abscissa of radius much 

 longer than first transverse cubitus, radius orginating be- 

 fore middle of stigma but not at its base; notauli indicated 

 only at anterior margin of dorsulum; nervellus without 

 a branch exareolatus 



2. Face beneath antennse mostly black; scape, pedicel, clypeus, 



mandibles, tegulse, coxse, trochanters, tibiae, and greater 

 part of apical half of abdomen, almost concolorous, brown- 

 ish stramineous; tarsi also brownish stramineous, but more 

 or less with dusky stains; notauli extending to beyond 

 middle of mesonotum; palpi more or less dusky; veins and 

 stigma brownish; mandibles not emarginate beneath; sec- 

 ond abscissa of radius much shorter than third. Length 



4 mm. (female) novaeangliae 



Face beneath antennae brownish stramineous; scape be- 

 neath and part of cheeks concolorous with face beneath 



