THE INSECTS OF NEW JERSEY. 675 



CEROPALES Latr. 



C. bipunctatus Say. Chester IX, 16 (Coll) ; Caldwell (Cr) ; Newark, 

 Ocean Co. (Sm) ; Riverton IX, 10 (Vk) ; DaCosta VIII, 3 (Dke). 



C. fraterna Smith. Trenton V, 24, VIII, 21 (Hk). 

 C. longipes Smith. Trenton VIII, 3 (Hk). 



Super-family SPHECOIDEA. 



This includes a large series of digger and other wasps, all of them 

 solitary, most of which provision their nests or cells with other insects. 

 Some are parasitic, and, as a whole, the series is decidedly useful. 



Family PEMPHREDONID.E. 



Usually slender, rather small wasps, shining black in color. They bur- 

 row in the pith of dry branches, making very irregular and complicated 

 channels. Quite generally they store their nests with plant lice. 



PSEN Latr. 



P. cressoni Pack. Camden Co. IX, 1 (Fox), IX, 22, on flowers of aster 

 (Vk); Woodbury VI, 17, Lucaston IX, 12 (Dke). 



P. denticulatus Pack. Camden Co. IX, 7 (Fox). 



P. leucopus Say. New Brunswick V, 27 (Coll). 



P. niger Pack. New Jersey (U S N M). 



P. nigrescens Rohw. Clementon VI, 30 (Hk). 



P. pauper Pack. Camden Co. VIII, 24 (Fox); Westville (Crn). 



P. perplexa Rohw. Camden Co. VIII, 6 (Fox). 



P. striatus Vier. Westville VIII, 30, the type locality (Vk) ; Avalon VI, 



9 (Jn). 



P. longicornis Fox. Westville VIII, 30 (Jn). 

 P. johnsoni Vier. Riverton VI, 10 (Jn), the type locality. 

 P. maculipes Fox. North Woodbury VI, 13 (Vk). 



PEMPHREDON Latr. 



P. concolor Say. Camden Co. VII, 27 (Fox). 



P. bipartior Fox. New Brunswick VI, 20 (Coll); Anglesea IX, 8 (Dke).. 



P. angularis Fox. New Brunswick VI, 10 (Coll). 



P. inoratus Say. (Cemonus) New Jersey (Cress Coll). 



P. harbecki Rohw. (Cemonus) Trenton VII, 5 (Hk). 



STIGMUS Jur. 

 S. americanus Pack. Camden Co. VI, 28 (Fox). 



