No. 22.] HYMENOPTERA OF CONNECTICUT. 189 



45. First dorsal abdominal plate distinctly less than twice as long 



as wide at base; first and second dorsal abdominal plates 

 at least mostly smooth and polished; hind coxae black .... 46 

 First dorsal abdominal plate at least nearly twice as long 

 as wide at base 47 



46. Hind femora black, wings whitish; propodeum without a 



distinct median longitudinal carina; first dorsal abdom- 

 inal plate rounded at apex cassianus 



Hind femora mostly stramineous in female, mostly blackish 

 in male euchaetis 



47. First and second dorsal abdominal plates sculptured, venter 



more or less stramineous; propodeum black or blackish 

 and with a median longitudinal carina; tegulse stramine- 

 ous 48 



First and second dorsal abdominal plates smooth and pol- 

 ished, the latter plate apparently twice or more than twice 

 as wide at apex as at base * milltaris 



48. Hind legs including coxae almost entirely stramineous 



radiatus 

 Hind legs mostly brownish and blackish and with their coxse 

 black omigis 



49. Propodeum without a median longitudinal carina but usu- 



ally with a more or less distinct areola 50 



Propodeum with a median longitudinal carina and without an 

 areola; second dorsal abdominal plate transversely oblong 

 and distinctly shorter than third, the latter virtually en- 

 tirely smooth (Pseudapanteles) consimilis 



50. Propodeum exareolate or at least without costulse 51 



Propodeum areolated or at least with costulas 62 



51. Hind femora brownish or blackish; first dorsal abdominal 



plate at least one and one-half times as long as wide at 



base 52 



Hind femora stramineous or reddish, at least in part; first 

 dorsal abdominal plate nearly one and one-half times as 

 long as wide at base 59 



52. Tegulse stramineous; first dorsal abdominal plate at most ap- 



parently only twice as long as wide at base and apparently 

 narrower at apex than at base; scutel polished, virtually 



impunctate, wings including stigma brownish ^3 



Tegulae black 54 



53. Second dorsal abdominal plate granular, third dorsal abdom- 



inal segment sculptured housatannuckorum 



Second dorsal abdominal plate coarsely longitudinally stri- 

 ated, third coarsely sculptured at base omigis 



54. First dorsal abdominal plate not or apparently not narrower 



at apex than at base, and with or without a median fovea; 

 third dorsal abdominal segment indistinctly sculptured.. 55 



