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



Propodeum without a carina or sculpture to middle; third 

 dorsal abdominal segment yellowish at base and down 

 the middle dorsator var. variabilis 



17. Thorax mostly stramineous dorsator 



Thorax mostly black dorsator var. aequalis 



18. Second dorsal abdominal segment apparently three times 



as wide at apex as long down the middle 19 



Second dorsal abdominal segment apparently only twice as 

 wide at apex as long down the middle; propodeum with 

 a median carina or sculpture from base to middle or be- 

 yond canadensis 



19. Abdomen delicately sculptured; mesopleurse partly reddish 



brown 20 



Abdomen coarsely sculptured, second segment mostly 

 black; mesopleurae black; propodeum with a carina or 

 sculpture from base to middle or beyond metacomet 



20. Propodeum with a carina or sculpture from base to middle 



or beyond hobomok 



Propodeum without a carina or sculpture from base to mid- 

 dle montowesei 



21. Femora mostly stramineous; propodeum without a carina or 



sculpture from base to apex; first dorsal abdominal seg- 

 ment black, except membranous part of first segment, 



which is pale 22 



Femora mostly black or blackish, apical half of fore femora 

 and fore tibiae beneath stramineous; body mostly black; 

 propodeum without a carina or sculpture from base to mid- 

 dle; abdomen more or less pale, fifth and following seg- 

 ments dark, blackish or dark brown; mouth pale, palpi 

 black or blackish vernoniae 



22. Abdomen mostly reddish yellow above; propodeum v/ith a 



carina or sculpture from apex to middle or beyond. . gastroideae 

 Abdomen almost entirely black above; propodeum with a 

 carina or sculpture from apex to middle or beyond uncas 



*M. wawequa Viereck (new species). 

 Head and thorax black ; length less than 4 mm. ; first dorsal 

 abdominal segment black or mostly , black ; second, third and 

 fourth dorsal abdominal segments mostly brown, remainder of 

 dorsum of abdomen mostly black. 



Type locality: New Haven, 27 June, 1905 (H. L. V.). 

 *M. sebequanash Viereck (new species). 

 Body mostly brown ; head and thorax blackish above ; length 

 2 mm. ; exserted portion of ovipositor about one-half the length 

 of the abdomen. 



Type locality: New Haven, 6 July, 1904 (H. L. V.). 



