NO. 2115. NEW NEOTROPICAL MUSCOID FLIES— TOWNSEND. 413 



ECHINOMASICERA, new genus. 



Genotype. — Echinomasicera Jitjstrix, new species. 



Differs from Masicera in male possessing two strong proclinate 

 orbitals, facialia strongly ciliate, hind tibiae ciliate, and abdomen 

 thickly set with subspinelike macrochaetae on disk of second and all 

 of third and anal segments. 



Differs from Blepliaripeza by the male orbitals, arista strongly 

 thickened on basal third, strong proclinate ocellar bristles, male front 

 at vertex nearly equal to eye-width, palpi but little broadened on 

 apical two-thirds, frontals descending low, cubitus well removed from 

 wing-margin, male claws hardly as long as last tarsal joint, four 

 sternopleural and four postsutural bristles. 



ECHINOMASICERA HYSTRIX, new species. 



Length of body, 12 mm.; of wing, 11 mm. One male, Matucana, 

 Peru, about 8,000 feet. May 1, 1914, on foliage (Townsend). 



Black ; whole head lightly silvery-white poUinose, changing to dark 

 according to light incidence. Palpi black, faintly obscure reddish- 

 fulvous on tips. Antennae deep black. Frontalia dark brown. 

 Mesoscutum very thinly pollinose, three narrow vittae in middle, 

 broad broken one on each side. Scutellum obscure reddish-fulvous, 

 black on base and sides, tinged with black on disk. Abdomen 

 obscure dark rufous on outer third of second segment. Wings sub- 

 hyaline, faintly smoky throughoiit, yellow-fuscous on base narrowly 

 following the veins. Tegulae watery-fuscous, narrow margins 

 blackish. 



Holotype.—Csit. No. 19435, U.S.N.M. 



This species greatly resembles in general appearance Blepharipeza 

 montagna Townsend and Fdbriciofsis Jiystrix Townsend, which are 

 respectively from Uruhuasi and Casahuiri, in the south Peruvian 

 montanya. 



BELVOSIOMIMA, new genus. 



Genotype. — Belvosiomima fosteri, new species. 



Differs from Triachora as follows: Whole body very much broad- 

 ened. Vertex much exceeding one-third of head-width, but less than 

 one-half same. Facial depression of female deeper, that of male 

 greatly deepened. Cheeks fully one-half eye-height in female, those 

 of male about two-fifths same. Antennae longer, the third joint of 

 male heavily bulged on upper edge at base. Arista longer, broadly 

 flattened all way to tip. Epistoma of male narrowed, with slope of 

 45° from plane of clypeus. Palpi heavier. Head bristles stronger. 

 Claws of both sexes are short. Front as well as all tarsi of female 

 broad, and heavily thickened. 



