CATALOGUE OF INSECTS. 525 



bands, wings usually black and kept in constant jerky motion when the insect 

 is moving about. The species prey on spiders and may be diggers or makers of 

 mud cells under stones, etc. A few are said to be guests in the nests of other 

 diggers. 



Sub-family I PEPSINJE. 



PEPSIS Fabr. 



Fig. 246. — Tarantula hawk, Pepsis formosus of the Southwest. 



S. elegans St. Farg. New Jersey, probably. 



SALITJS Fabr. = PRIOCNEMIS Schiodte. 



S. alienatus Smith. Jamesburg (Sm), Camden Co., VIII, 24, IX, 7, Glou- 

 cester Co., IX, 29 (Fox). 



S. conicus Say. Jamesburg, V, 4, New Brunswick (Sm), Camden Co., V, 18, 

 Gloucester Co., V, 31, IX, 2 (Fox). 



S. fortis Cress. New Jersey, probably. 



S. fulvicornis Cress. Ocean Co. (Sm), Gloucester Co., VII, 19, VIII, 16, IX, 

 7 ( Fox i . 



S. gernianus Cress. Philadelphia, IX, 5, 14 (Fox). 



S. nebulosus Dahlb. New Jersey, probably. 



S. nuperus Cress. Philadelphia, VII, 10, Gloucester Co., IX, 2 (Fox >. 



S. pomileus Cress. Gloucester and Camden Cos.. IX, 7, 21, New Jersey, VI, 

 1 (Fox). 



S. unifasciatus Say. Gloucester Co., VII, 19, VIII, 16, Camden Co., VII, 

 26 (Fox). 



