8o4 REPORT OF NEW JERSEY STATE MUSEUM. 



cheese, in ham or bacon, or, in general, in any fatty material, and often 

 do much damage, being especially troublesome in pork-packing establish- 

 ments. From the peculiar power of leaping possessed by the maggots 

 they are often called 'skippers'; the act is performed by the larva seiz- 

 ing with its extended mouth booklets the edge of the posterior truncature 

 of the body and then suddenly releasing it while pulling hard." — Willis- 

 ton. 



PROCHYLIZA Walk. 



P. xanthostoma Walk. Riverton IV, 9, X, 9 (Jn) ; Cape May IX, 21 

 (Dke). 



SEPSIS Fallen. 



S. violacea Meig. New Brunswick VII, 20, Jamesburg VII, 15. Ocean Co. 

 V (Sm); Trenton VII, 6 (Hk). 



NEMOPODA Desv. 



N. cylindrica Fab. Dover VI, 



17, Morris Plains VI, 25, 

 Riverton IX, 17, Trenton V, 

 20 (Hk). 



N. minuta Wied. Chester IX, 



2 (Coll); Newark VI, 14, 

 Riverton VII, 3. 



PIOPHILA Fallen. 



P. case! Linn. This is the 

 cheese mite or skipper, and 



occurs everywhere. Piofihi/a casn, parent o{ " skippers" in cheese, 



etc. 



P. nlgriceps Meig. Pemberton Fig. 334. 



V, 10 (CG). 



Family PSILID^. 



Slender flies of moderate size, with large wings, long legs and at least 

 moderately long antennfB. The larvae, so far as known, live in roots or 

 galls. 



LOXOCERA Meigen. 



L. cylindrica Say. Del. Water Gap VII, 12, Camden VI, 10, Woodbury 



VI, 7, Clementon V, 30, Mullica Hill ( Jn) ; Trenton VII, 11 (Hk). 

 L. pectoralis Loew. Dunnfield, Del. Water Gap VII, 11. 

 L. pleuritica Loew. Dunnfield, Del. Water Gap VII, 12. 



