328 Annals Entomological Society of America [Vol. XI, 



SCIARA. 



1. Sciara forceps n. sp. 



Male: Length, 1.6 mm. Head black, shiny; palpi and scape of 

 antennae luteous, antenna? broken. Thorax; mesonotum shiny, black; 

 humeri and pleura of prothorax luteous; metanotum and pleurse of 

 meso and metathorax fuscous. Abdomen dark fuscous with posterior 

 third of the abdominal segments and venter luteous; hypopygium 

 light brown; clasper (Fig. 1) with several stout apical spines, one 

 slightly stouter than the rest, and one very prominent large, subapical 

 spine, giving the clasper a bifurcated appearance. Cox£e and femora 

 luteous, trochanters black, tibiae and tarsi fuscous. Wings (Fig. 32) 

 hyaline; media and cubitus setose; base of Rs noticeably distad of the 

 midpoint between the humeral cross vein and the tip of Ri; Ri ends 

 noticeably proximad of the forking of media; petiole of cubitus dis- 

 tinctly longer than the base of media; costa extends over half the 

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

 length of the wing and slightly proximad of the tip of M2. Halteres; 

 pedicel luteous, knobs darker. 



This species is closely related to dives, but may be distin- 

 guished from the latter by the characters of the clasper, the 

 color of the body and the fact that the petiole of the media 

 is setose. 



Described from 1 male collected May 3, 4, 1916, at Palatka, 

 Florida, by J. C. Bradley. Type No. 207. 



2. Sciara multisetifera n. sp. 



Male: Length, 2.8 mm. Head piceous to black; antenna? of dried 

 specimen half as long as body, piceous to black. Thorax, abdomen 

 piceous to black, the posterior margins of the second, third and fourth 

 abdominal segments grayish. Angles of humeri dull luteous. Append- 

 ages, including palpi, halteres, legs and hypopygium fuscous. Hypo- 

 pygium; clasper (Fig. 2) with many setae shorter than the numerous 

 slender spines along the inner margin. Wings (Fig. 33) smoky brown; 

 media branches setose; base of Rs noticeably distad of the midpoint 

 between the humeral cross vein and the tip of Ri; Ri ends proximad of 

 the forking of media; petiole of cubitus distinctly longer than the base 

 of media; costa extends about half the distance between the tips of 

 Rs and Mi; Rs ends far distad of .85 the length of the wing and distad 

 of the tip of Ma. 



This species differs from cylindrica, its near relative, by 

 having many more setae on the clasper, all of which are shorter 

 than those on the inner margin. 



Described from 3 males, collected in South Arizona, Aug., 

 1902, by F. H. Snow. Type No. 208. Two allotypes. 



