1918] Revision of the Genus Sciara 335 



subequal, scattered spines, and with one proximad, longer, more slender 

 spine along the inner margin. Coxae and palpi luteous; trochanters 

 black; tibiae dull yellowish-brown; tarsi fuscous to black; hind tibia 

 and tarsus about equal in length. Wings (Fig. 47) hyaline; veins 

 brown, rather strongly marked; media and cubitus without setae; 

 petiole of cubitus slightly less than half the length of the base of media; 

 Ri ends at least one-sixteenth of the wing length proximad of the forking 

 of M; the base of Rs distad of the mid-point between the humeral 

 cross vein and the tip of Ri; Mo ends distad of the termination of Rs. 

 Twin Falls, Moscow, Idaho. 



Female: Length, 1.5 mm. Colored like the male. Moscow, Idaho. 



This species is closely related to pauciseta Felt., from which 

 it may be distinguished by the characters of the hypopygium 

 and the more retracted position of the tip of R^. 



Described from 2 males reared by Professor Burrill, Oct. 27, 

 1916, and Oct. 3, 1917, and 10 females reared Oct. 27, 1916, 

 from the heads of red clover, Moscow, Idaho. Type No. 221. 



17. Neosciara polychaeta n. sp. 



Male: Length, 1.2 mm. Head black; antennae dark fuscous, over 

 two-thirds the length of the body, scape fulvous, pa.lpi luteous. Thorax 

 black shining. Abdomen fuscous to black; hypopygium fuscous, with 

 2 patches of setae at base (Fig. 17b), one on each side of the median 

 ventral line; clasper (Fig. 17) with one large apical spine and about 

 6 subapical smaller but stout spines, the most proximal one being 

 longer and more slender than the others. Coxas luteous, trochanters 

 black, femora dull luteous, tibiae brown, tarsi fuscous. Wings (Fig. 48) 

 hyaline; media and cubitus without setae; base of R^ far distad of the 

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

 noticeably proximad of the forking of media; petiole of cubitus over 

 half as long as the base of media; costa produced less than half the 

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

 length, and about opposite the tip of M2. Halteres luteous. 



Female: Length, 1.4 mm. Same as male, except the antennae 

 which have a black scape and are no more than half the length of 

 the body. 



Described from 5 males and 1 female collected at Clayton, 

 Georgia, May 18-26, 1911. Type No. 222. Four paratypes. 

 and one allotype. 



18. Neosciara conglomerata n. sp. 



Male: Length, L8 mm. Head black; antennae black, not quite 

 one-half the length of the body. Thorax black, dull, covered with a 

 fine white powder. Abdomen fuscous, the posterior margin of each seg- 

 ment luteous. Hypopygium fuscous, with 2 patches of seise at the 



