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



First four abdominal segments with yellowish margins, the 

 second segment rather reflexed collega var. 



0. (Symmorphus) walshianus De Saussure. 

 Length 12 mm. 



O. (S.) albomarginatus De Saussure. 

 Length 9 mm. 



Apparently occurs throughout the northern section of the State 

 at least. 



0. (S.) philadelphiae De Saussure. 

 Length 11 mm. 

 Sure to occur in Connecticut. 



O. (S.) debilis De Saussure. 



Length 8.5 mm. 



Found everywhere in the State. 



O. (S.) cristatus De Saussure. 

 Length 9 mm. 



Found everywhere in the State. Scotland, 30 July, 1904 

 (B. H. W.). 



O. (Ancistrocerus) spinolae De Saussure. 



Length 6 mm. 



This State is possibly the type locality of this species. 



O. (A.) unifasciatus De Saussure. Howard, Insect Book, 

 PI. vi, Fig. 17. 



Length 11-15 mm. 



Occurs probably throughout the southern portion of the 

 State. 



O. (A.) campestris De Saussure. Howard, Insect Book, PI. 

 v, Fig. 5. 



Length 13 mm. 



Branford, 29 May, 1905 (H. W. W.). Will be found, no 

 doubt, throughout the State. 



*0. (A.) waldeni Viereck. 

 Length of female 13 mm. 



Type locality : New Haven. Only one specimen is known, and 

 this was caught 15 May, 1903. 



