1895.] NATURAL SCIENCES OF PHILADELPHIA. 319 



fourth, grayish yellow. Legs black, the knees narrowly yellow. 

 Halteres light yellow. Wings hyaline, third and fourth veins slightly 

 diverging toward their apices. Length 2.4 mm. Welaka, Florida, 

 May 9, 1894; and Delaware County, Pa., July 23, 1893. C. W. 

 Johnson. Two specimens. 



LIST OF SPECIES. 

 BY C. W. JOHNSON. 



CECIDOMYID^E. 



Diplosis sp. On Oak, Georgiana, Jan. 24. 

 Diplosis sp. Charlotte Harbor (Mrs. Slosson). 



MYCETOPHILIDJE. 



Platyura ELEGANS-Coq. Georgetown, May 9. 

 Neoglaphyroptera cincta Coq. Tick Island, May 12. 

 Sciara sp. (U. S. Nat. Mus.) 



BIBXONTD.&3. 



Bibio rufithorax Wied. St. Augustine. The thorax of the $ 

 is black. 



Bibio thoracica Say. East Florida (Say). 



Dilophus orbatus Say. St. Augustine; Juniper Co., May 15; 

 Inverness, Mar. 27 (Robertson); Charlotte Harbor — exceed- 

 ingly common from February to the end of March (Mrs. Slos- 

 son). 



Plecta ruficollis Fabr. St. Augustine ; Charlotte Harbor, Mar. 

 (Mrs. Slosson) ; Lake Harney (Messrs. Hubbard and Schwarz). 



Plecta sp. St. Augustine ; Drayton Island, May 9. 



CULICIDiE. 



Culex t.eniorhynchus Wied. St. Augustine; Tick Island, Vo- 

 lusia Co., May 12; Charlotte Harbor (Mrs. Slosson). 

 Culex ciliatus, Fabr. St. Augustine. 



Culex fasciatus, Fabr. Charlotte Harbor, Mar. (Mrs. Slosson). 

 Anopheles crucians Wied. Troublesome, Tick Island, May 12. 



