1895.] NATURAL SCIENCES OF PHILADELPHIA. 327 



THEREVID.S3. 



Psilocephala HiEMORRHOiDALis Macq. Ormoud, April (Mrs. 

 Slosson.) 



Psilocephala festina Coq. St. Augustine, March 15; Drayton 

 Island, May 9; Ormond (Mrs. Slosson); Georgiana, July 

 (Whitfeld.) 



Psilocephala notata Wied. St. Augustine, March 14; Ormond, 

 April (Mrs. Slosson.) 



Psilocephala tergissa Say. St. Augustine, March 15 ; Or- 

 mond, April (Mrs. Slosson.) 



Psilocephala johnsoni Coq. St. Augustine, March 15; Or- 

 mond, April (Mrs. Slosson.) 



Psilocephala obscura Coq. Key West, February 5 (U. S. Nat. 

 Mus. ) 



Psilocephala pictipennis Wied. St. Augustine ; Drayton, Island 

 and Welaka, May 9 ; Crescent City (Hubbard) U. S. Nat. Mus. 



Psilocephala placida Coq. (U. S. Nat. Mus.) 



Psilocephala marmorata Coq. St. Augustine. 



Psilocephala marcida Coq. (U. S. Nat. Mus.) 



Thereva diversa Coq. (U. S. Mat. Mus.) 



SCENOPINIDJE. 



Scenopinus nubilipes Say. (Loew. ) 



EMPIDjE. 



Hybos triplex AValker. Charlotte Harbor, March (Mrs. Slos- 

 son.) 

 Euhybus subjectus Walker. St. Augustine; Charlotte Harbor 



(Mrs. Slosson.) 

 Syneohes simplex Walker. Charlotte Harbor (Mrs. Slosson.) 

 Syneches pusillus Loew. Charlotte Harbor (Mrs. Slosson.) 

 Hilara leucoptera Loew. Charlotte Harbor (Mrs. Slosson.) 

 Hemerodromia superstitiosa Say. Drayton Island, May 9. 



DOLICHOPODID^.* 



Dolichopus longipennis Loew. (Aldrich.) 

 Dolichopus irrasus Walker. 



* The new and undetermined species of this family will be described later 

 by Prof. J. M. Aldrich. 



