FUNGUS GNATS OF NORTH AMERICA. llj 



species does not mention the claws. I neglected to examine the 

 type at Cambridge, Mass. 



Male and female. Length 3 to 4 mm. Black, including 

 antennae, mouth and palpi; thorax shining, legs and fore coxae 

 yellowish ; wings of the male subhyaline, of the female tinged 

 with black. "D. C." Larvae in cow dung. 



7. Genus Phorodonta Coquillett. 

 Proc. U. S. Nat. Museum. XXXVIL 589. 1910. 

 Odonionyx, Rubs. Berlin. Ent. Zeitschr. XXXIX. 19. 1894. 

 Wings, proboscis, and antennas as in Sciara; claws elongate 

 and distinctly toothed. 



Phorodonta niger Wiedemann. 

 Diptera exot. L 44. 1821 (Sciara). 

 Male. Length 4.7 mm. Black; the antennae alone in certain 

 lights more grayish. "Ga., N. M., Mexico." O. helveokis 

 Riibs. is a Porto Rican species. 



8. Genus Rhynchosciara Riibsaamen. 



Berlin. Ent. Zeitschr. XXXIX. 19. 1894. 



Face produced snoutlike; proboscis with broad lamellae; eyes, 



antennae, and venation as in Sciara. Legs strong, claws simple, 



empodium and pulvillse present. This genus occurs .in Mexico. 



9. Genus Sciara Meigen. 



Illiger's Mag. IL 263, 1803. 



Lycoria Meigen, Nouv. Class. 1800 (without type). 



Head small; proboscis short; palpi 4-jointed, the first very 



short and not always distinctly differentiated from the second ; 



antennae 2-|-i4-jointed ; three ocelli, the laterals remote from 



the eye margin. Thorax moderately arched. Legs slender, 



tarsal claws not toothed. Wings microscopically setulose, not 



hairy (Figs. 218-252'). Halteres present. 



Tabic of Species* 

 a. Large southern species, 6 mm. or more in length; males undescribed. 

 b. Ri ends distad of the base of the fork of M; wing blackish 

 (Fig. 218). I. picea. 



* This table is based in part on male characters, only a few well- 

 defined species represented by females alone are included. By wing 

 length is meant the distance from the humeral crossvein to the tip of 

 the wing, measured parallel to the longitudinal axis. 



