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



Key to Genera. 



1. Mandibles tridentate 2 



Mandibles simple or bidentate .- 4 



2. First abdominal segment subpetiolate, much smaller than 



second Bruesia p. 622 



First abdominal segment broadly sessile with second 3 



3. Female without a pygidium; male with two cubital cells 



Pseudomethoca p. 622 

 Female with a well defined pygidium; male with three 

 cubital cells Nomiaephagus p. 623 



4. Eyes round, polished, not facetted; radial cell truncate at 



apex; first abdominal segment posteriorly narrower than 



second Dasymutilla p. 623 



Eyes oval, facetted 5 



5. Apex of first abdominal segment nodose, not as wide as base 



of second; eyes of male emarginate within Ephuta p. 625 



Apex of first abdominal segment as wide as base of second 6 

 within Timulla p. 625 



6. Female with a distinct pygidium; eyes of male emarginate 

 Female without a pygidium; eyes of male entire within.... 



Sphaerophthalma p. 625 



Bruesia Ashmead. 

 This specific group was also named Pycnomutilla by Ashmead. 

 The following key is based on the males. 



Key to Species. 



Carina of first ventral abdominal segment nearly straight 



harmonia 

 Carina of first ventral abdominal segment with a strong tooth 

 anteriorly harmoniif ormis 



B. harmonia Fox. 



The female is ferruginous, with black legs. The second 

 dorsal abdominal segment has pale spots and the pubescence is 

 sparse. 



*B. harmoniif ormis Rohwer. 

 The female is unknown. 

 Type locality: Lyme, 31 July, 191 1 (A. B. C). 



Pseudomethoca Ashmead. 

 P. canadensis Blake. 



Posterior lateral margin of the head dentate or carinate. 

 Female ferruginous, apex of the abdomen blackish. Male black. 



