THE INSECTS OF NEW JERSEY. 757 



D. albiciliatus Loew. Dover VI, 23. 



D. bifractus Loew. Jamesburg VII, 4, Ocean Co. (Sm) ; Westville VIII, 18. 



D. eudactylus Loew. Riverton VII, 3, Woodbury VI, 1. 



D. vittatus Loew. Princeton VII, 21. 



D. batillifer Loew. New Jersey (Bt). 



D. reflectus Aid. Lenola V, 30, Jamesburg VII, 4 (Jn). 



D. comatus Loew. Trenton VI, 1 (Coll) ; Jamesburg, Anglesea V, 28. 



D. myosota O. S. Trenton VIII, 21 (Hk). 



GYMNOPTERNUS Loew. 



G. flavus Loew. Dunnfield VII, 8, Dover VII, 16, Westville VII, 21. 



G. spectabilis Loew. Westville V, 19, Clementon V, 30. 



G. scotias Loew. Shark River VII, 12. 



G. ventralis Loew. Shark River VII, 12. 



G. debilis Loew. Jamesburg VII, 4, Merchantville VI, 28. 



G. barbatulus Loew. Westville VI, 18. 



G. exilis Loew. Merchantville VI, 28, Avalon VI, 30. 



G. lunifer Loew. Ocean Co. V (Sm). 



G. albiceps Loew. Manahawkin IX, 5 (Hk). 



G. subdilatatus Loew. Delaware Water Gap VII, 8. 



G. humilis Loew. Boonton VI, 2 (CG) ; Ocean Co. (Sm). 



HERCOSTOMUS Loew. 

 H. vetitus Melander. Clementon V, 30. 



TACHYTRECHUS Stannius. 



T. vorax Loew. Westville VIII, 18 (Jn) ; Clementon V, 10 (CG). 

 T. protervus Melander. Clementon V, 10. 

 T. binodatus Loew. Durham Pond, Morris Co. VIII, 18 (GG). 

 T. junctus Coq. Manahawkin IX, 5 (Hk). 



PELASTONEURUS Loew. 



P. vagans Loew. Princeton VII, 21, Clementon V, 30. 

 P. lugubris Loew. Cape May VI, 22. 



P. lamellatus Loew. Jersey City IX, 18, Brigantine VIII, 3. 

 P. laetus Loew. Trenton VIII, 21 (Hk). 



Family EMPID^E. 



The "dance-flies," so called because of their habit of congregating in 

 swarms under trees or near shrubs and about brooks, dancing up and 

 down. The mouth parts are often prolonged into a beak, and they are 



