676 REPORT OF NEW JERSEY STATE MUSEUM. 



SPILOMENA Shuck. 



\ 



S. pusiMa Say. New Jersey probably. 



PASSALCECUS Shuck. 



P. annulatus Say. Camden Co. VII, 28 (Fox). 

 P. mandibularis Cress. Northern New Jersey (Ashm). 

 P. rivertonensis Vier. Riverton VI, 17 (Jn) ; the type locality. 



Family AMPULICID^E. 



Curious slender wasps, with very long prothorax, a conic head with the 

 base in front, and a clypeus like a beak. They are very rare and are 

 said to prey on cockroaches. 



RHINOPSIS Westw. 

 R. canal iculata Say. Sure to be found in New Jersey. 



Family SPHECIDJE. 



This family is easily recognized by the long slender pedicel or stalk 

 connecting the thorax with the main bulb of the abdomen. Among them 

 are the common mud-daubers that plaster their clay or earthen cells; 

 against out-houses and under porches, sometimes inside of shutters or in 

 similar sheltered places. These cells are filled with caterpillars, spiders, 

 grasshoppers or the like, stored by the mother wasp as food for the 

 larva. Some species are true diggers and make underground cells only. 

 All of them may be considered as beneficial. 



SCELIPHRON Klug. 



S. cementarium Dru. Throughout the State and the most abundant of 

 our mud-daubers. The variety "architectus" Say. occurs with the 

 type and as commonly, while "lunatum Fab. (canadensis Sin)" has 

 been taken on Staten Island (Ds). 



CHALYBION Dahlb. 

 C. casruleum Linn. Throughout the State VI-IX, not rare. 



SPHEX Linn. (AMMOPHILA Kirby.) 



S. arvensis Dahlb. Staten Island (Ds) ; g. d. in New Jersey (Bt). 

 S. conditor Smith. Long Island, and sure to occur in New Jersey. 

 S. gracilis Lep. Caldwell (Cr) ; Chester, Orange Mts., Jamesburg VII, 



11, Ocean Co., Swedesboro VII, 1"6 (Coll); Lucaston VI, 27, IX, 12, 



Manumuskin VIII, 17 (Dke). 



S. procera Dahlb. (gryphus Sm.) Throughout the State VI-X. 



