19 IS] Revision of the Genus Sciara 341 



This species is near impatiens in the key, and differs from 

 the latter by having no spine separated from the rest on the 

 clasper, and a more retracted costa. 



Described from one male collected at Santa Paula, CaL 

 Type No. 234. 



30. Neosciara perfecta n. sp. 



Male: Length, l.S mm. Head black, somewhat shiny; antennae 

 fuscous, about half the length of the body, segments of flagellum not 

 twice as long as wide except at tip; palpi fulvous. Thorax somewhat 

 shining, fuscous. Abdomen fuscous. Hypopygium fuscous, with no 

 cluster of setas on the mid- ventral line at the base; clasper (Fig. 30) 

 with numerous comparatively short setae at the apex, and with no 

 stout spines. Legs fulvous, tibiae and tarsi fuscous. Wings (Fig. 61) 

 hyaline; cubitus and media without setae; base of Rg distad of the 

 mid-point between the humeral cross vein and the tip of Ri; Ri ends 

 proximad of the forking of M ; petiole of cubitus a little less than half 

 the length of the basal section of M; costa extends about two-thirds 

 the distance between the tips of Rs and Mi; R^ ends distad of .85 the 

 length of the wing, and proximad of the tip of M2. Halteres luteous. 



This species is near coprophila in the key, but differs from 

 the latter especially by having a shorter cubitus petiole, yellow 

 halteres, and shorter apical setae on the clasper. 



Described from one male specimen collected in Maryland, 

 April 12, 1914. Type No. 235. 



New Species of Sciarids from South, America. 



By F. W. Pettey, Cornell University, Ithaca, N. Y. 



Sciara paradoxa n. sp. 



Male: Length, 2.8 mm. Head black; antennae and palpi black. 

 Thorax black, somewhat shining, with whitish powdery covering. 

 Abdomen black. Hypopygium black, with no cluster of set« on the 

 mid- ventral line at base; clasper (Fig. 65) at least twice as long as wide, 

 with one large and about 4 smaller but stout apical spines, and one 

 larger subapical spine. Legs: coxas black, femora and tibias dark 

 fuscous, tarsi black. Wings (Fig. 64) smoky brown, with cubitus and 

 media setose and second anal vein indicated by a row of setas; base 

 of Rs at about the mid-point between the humeral cross vein and the 

 tip of Ri; Ri ends opposite or slightly distad of the forking of M; 

 petiole of cubitus one-third of its length longer than the basal section 

 of M; costa extends about one-third the distance between Rs and Mi; 

 Rs ends considerably distad of .85 the length of the wing, and slightly 

 proximad of the tip of M2. Halteres black. 



