632 CONNECTICUT GEX)L. AND NAT. HIST. SURVEY. [Bull. 



P. argenteus Cresson. 



Occurs along the coast and up the large river valleys. 



P. cylindricus Cresson. 



Probably occurs throughout the State. Branford, 5 July, 1904, 

 Poquonock, 27 June, North Haven, 3 August, 1905 (H. L. V.) ; 

 East Hartford, 2 August, 1905 (B. H. W.). 



P. marginatus Say. 



Occurs throughout the State. Torrington, 7 July, 1905 

 (W. E. B.) ; Putnam, 12 July, North Haven, 3 August, 1905 

 (H. L. v.). 



P. subviolaceus Cresson. 



Stratford, 1 6 August, 1904 (H. L. V.). 



P. tropicus Linnaeus. Howard, Insect Book, PI. vii, Fig. 11. 

 New Haven, 20 July, 1904 (B. H. W.). 



Sericopompilus Ashmead. 



S. humilis Cresson. 



Posterior margin of the pronotum subarcuately emarginate; 

 black ; posterior tibiae with a white spot near the base ; wings hya- 

 line, apex bifasciate. • 



New Haven, 9 June, 1905 (B. H. W.). 



Arachnophroctonus Ashmead. 



A interruptus Say. Howard, Insect Book, PI. v. Fig. i. 



Large; ferruginous, marked with black; wings yellowisk. 

 Preys on the spider Epeira strix. 



Can be found throughout the State. Sachem's Head, i August, 

 1904 (H. L. v.). 



Psammochares Latreille. 

 Mr. Banks separates this genus into the following subgenera 

 on characters found only in the female sex. 



Key to Subgenera. 



1. Clypeus deeply emarginate in middle Lophopompilus p. 634 



Clypeus not more than gently concave 2 



2. No distinct tarsal comb Anoplius p.' 633 



A distinct tarsal comb 3 



3. Third joint of antennae very short, hardly longer than first 



Sophropompilus 



Third joint of antennae much longer than first 



Psammochares p. 633 



