Genera of African Muscoidea. 175 



Venter pale brownish. Legs blackish brown. Wings 

 i'aintly infuscated, teoulaj nearly white. 



Holotype, no. 19976 U.S. N. M. 



Named in honour of Mr. D. W. Snyder. 



OCYPTEROMIMA, gcn. liOV. 



Genotype, Ocypteromima polka, sp. n. 



llelated to the Aphria-Eriothrix series of groups, from tlie 

 genera of which it may be distinguished by the following- 

 characters : — Female only : Front anteriorly about width of 

 eye, gently narrowing to vertex; face widening therefrom at 

 same angle. Parafacials rather narrow, not as wide as third 

 antennal joint. Frontalia occupying nearly one-third of 

 frontal width posteriorly. No ocellars. Inner verticals 

 strong, reclinate, not decussate ; no outer verticals. Two 

 procliiiate and two reclinate froiito-orbitals. Only one frontal 

 below base of antenna^. Second antennal joint only slightly 

 elongate; third narrow, of even width, about three times as 

 long as second. Arista slender, finely pubescent, a little 

 thickened on basal half, rather tapered, basal joints very 

 short. Epistoma produced, but vibrissae very close to oral 

 margin. Checks narrow, the eyes descending as low as 

 vibrissse. Eyes practically bare, only very faintly and 

 sparsely short-hairy. Proboscis rather short, but corneous, 

 part below geniculation hardly as long as lower border ot" 

 head ; palpi slender, short, subtiliform. Two stej-no-pleurals 

 and three postsuturals. Scutellum without apical or discal 

 bristles, but with one long postero-lateial and one very short 

 antero-lateral. No discals on abdomen, first two segments 

 with median marginal pair, last two with maiginal row. 

 Abdomen subcylindrical, but swollen in middle, thence 

 tapering both ways. Legs slender, not ■ very elongate. 

 Apical cell open, constricted apically, ending a little before 

 wnig-tip. Cubitus abruptly rounded ; hind cross-vein nearer 

 same, straight. Third vein bristly nearly to small cross- 

 vein. No costal spine. 



Ocypteromima polila, sp. n. 



Length of body 8'5 mm., of wing 6"0 mm. 



One female, Lorenzo AJarques, March 1, 1910 (C. W. 

 Howard) . 



Black, silvery-white pollinose. AntennfE blackish, fron- 

 talia dark brown. Palpi appearing black, but iji reality deep 

 rufous, with many short black bristly hairs. Head all 



