242 CONNECTICUT GEOL. AND NAT. HIST. SURVEY.' [Bull. 



0. bilobatus (Provancher). 

 0. abdominalis (Cresson). 



Pammegischia Provancher. 



Key to Species. 



1. Vertex not at all transversely wrinkled; medial mesothoracic 



lobe not emarginate anteriorly 2 



Vertex transversely wrinkled or reticulate 3 



2. Frontal crest distinct; vertex punctate, more especially below; 



second joint of antennae as long as third; thorax stained 

 with brown; legs brown and pallid; abdomen and head 



tawny. Length 4 mm lvei 



Frontal crest indistinct; vertex polished and almost impunc- 

 tate; second joint of antennae two-thirds as long as third; 

 reddish tawny all over except apex of propodeum, which 

 is brownish. Length 16.5 mm .ouelleti 



3. Vertex transversely wrinkled, especially below, the wrinkles 



somewhat broken; occiput not distinctly wrinkled 4 



Vertex coarsely and deeply reticulate all over; occiput smooth 

 and polished; black; basal half of abdomen, except extreme 

 base of petiole, red; legs brown, tibiae and knees pale ashmeadi 



4. Body black and red; legs more or less yellow 5 



Body tawny all over except sutures of thorax above, or 



entire thorax and vertex black. Length 10 mm burquei 



5. Legs, beyond coxae, and face, tawny. Length 5 mm pallipes 



Legs beyond coxae brown; fore tibiae and tarsi and hind tarsi 



tawny. Length 7.5 mm xiphydriae 



P. lovei Ashmead. 

 P. ouelleti Bradley. 

 P. ashmeadi Bradley. 

 P. burquei Provancher. 



Bred by Dr. A. D. Hopkins from dead branches of hard maple 

 infested by Xiphydria abdominalis (albicornis) . 

 P. pallipes Cresson. 



P. xiphydriae Ashmead. 



Dr. J. C. Bradley thinks this must be the female of pallipes. 

 The species was bred from Xiphydria provancheri living in birch 

 twigs. 



TRIGONALID^E. 



The habits of none of the North American species belonging 

 to the family Trigonalidae are known, but the habits of some of 



