Dec, 1915-] Townsend: New Muscoidea. 219, 



basal half, tapering. Palpi large, stout, thickened at tip. Scutellum 

 with a weak divaricate apical pair of bristles, and three laterals, also 

 some weak but long subapicals and discals. Abdomen wider than 

 thorax, broad-ovate, discal macrochaetse on all the segments even in- 

 cluding the first. Wings broad. Cubitus with short stump, apical 

 crossvein nearly or quite straight. Claws rather short. 



Male. — Vertex about one seventh of head width, front same 

 width a little less than half way to base of antennae before broadening 

 rapidly. Parafrontals and parafacials a little more thickly set with 

 hairs. No fronto-orbitals either inner or outer, verticals hairlike and 

 vestigial. Cheeks fully one half eye height. Third antennal joint 

 proportionally longer, narrower, but hardly twice second ; arista 

 thickened on basal third. Palpi not so stout, but long and slightly 

 thickened apically. x'Vbdomen slightly narrower than thorax, elongate- 

 subconical, discals and anteromarginals present. Wings narrow. 

 Cubitus without stump, apical crossvein more bowed in. Claws very 

 elongate, the front ones much longer than last tarsal joint. 



Paramuscopteryx genalis new species. 



Length of body, 8 mm. ; of wing, 6 mm. One male and one female, 

 Moscow, Idaho (Aldrich). 



Shining black, head and thorax thinly silvery, frontalia and first two an- 

 tennal joints black in female and brown in male, palpi blackish-rufous in 

 male and obscure dark rufous in female. Abdomen of female showing pollen 

 only on narrow bases of last three segments, that of male with pollen more 

 general but rather heavier on bases of segments. Male abdomen is more 

 brownish, especially venter. Legs black or brownish. Wings clear. Tegulse 

 yellowish-white. (The male may not belong here.) 



Holotype, No. 196 14 U. S. N. M. Female. Allotype, male. The holo- 

 type bears label." Mnscoptery.v chcctosula Towns." placed there by Coquillett, 

 but this is not the species referred to under that name in Rev. Tach. 125. 

 (Vide Metopomnscopteryx tibialis.) 



METOPOMUSCOPTERYX new genus. 



Genotype, Muscopteryx tibialis Coquillett, 1902, Proc. U. S. Nat. 

 Mus., XXV, 115. It is to be noted here that the specimen cited by 

 Coquillett under Muscopteryx chert osula in Rev. Tach., 125 (length 

 9 mm., Missouri), is a male of tibialis with the single label "Collec- 

 tion C. V. Riley." 



Differs from Paramuscopteryx as follows : Macrochsetae much 



