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



P. (P.) tenebrosus Cresson. 



Recorded from the State and probably inhabits only the Boreal 

 part. 



P. (Lophopompilus) aethiops Cresson. Howard, Insect 

 Book, PI. V, Fig. 19. 



Occurs along Long Island Sound. New Haven, 3 October, 

 1902 (B. H. W.) ; Branford, 3 September, 1904 (H. L. V.). 



P. (L.) philadelphicus Le Peletier. 



New Haven (A. E. V.). Norton also took this species in the 

 State, probably near Farmington. 



P. (L.) atrox Dahlbom. Howard, Insect Book, PI. vii, 

 Fig. 14. 



Recorded from the State; and has also been taken at New 

 Haven, 18 September, 1903, Westville, 19 July (W. E. B.) ; 

 Branford, August, 1905 (H. W. W.). 



EUMENID^. 



By Henry Lorenz Viereck. 



Solitary wasps, with males and females that may dig in the 



ground, burrow in pith or wood, or make mud nests, e, g., the 



mud-pot of the potter wasp. These nests are stored with various 



insects. 



Key to Genera. 



1. Abdomen petiolate 2 



Abdomen sessile 3 



2. Maxillary palpi with three joints Zethus p. 634 



Maxillary palpi with four joints Eumencs p. 634 



3. First segment of abdomen funnel-shaped Nortonia p. 635 



First segment of abdomen not funnel-shaped 4 



4. Maxillary palpi with three joints Monobia p. 63S 



Maxillary palpi with six joints Odynerus p. 635 



Zethus Fabricius. 

 Head wider than high, the second segment of the abdomen in 

 the form of a globular bell. Only one species occurs in the State. 

 Z. spinipes Say. 

 Wings violet; more than 13 mm. in length. 



Eumenes Fabricius. 

 This genus comprises the potter wasps, which make symmet- 

 rical pots of clay in which to lay their eggs and rear their young. 

 But a single species is found in the East. 



