NO. 1935. MU8C0ID FLIES FROM SOUTH AMERICA— T0WN8END. 365 



. eyes very sparsely and indistinctly short-hairy, vibrissas far exceeding 

 the peristomal bristles, frontal bristles descending to opposite base 

 of third antennal joint. Facial plate feebly carinate. Macrochgetse 

 of abdomen normal, rather long. All macrochaetse, including those of 

 front, thorax, sciitellum, and legs consisting of rather long bristles. 

 Scutellum with a long apical decussate pair of bristles; two long 

 lateral bristles, the anterior one curved, the posterior one straight and 

 longer; a third very short lateral bristle between the last and the 

 apical pair; a weak discal pair in front of apical pair. Two orbital 

 bristles in female. Front fully as vnde in female as both eyes. Long 

 pair of divergent ocellar bristles present. Three postsutural and 

 three sternopleural bristles. Wings with a conspicuous costal spine. 



Reproductive habit unknown, but probably larviposition in 

 vicinit}' of hosts. 



Type-species. — Perua cuzcana, new species. 



The genus is named in honor of the Republic of Peru. 



PERUA CUZCANA, new species. 



Length of body, 7.5 mm.; of wing, 6.5 mm. One female, Cuzco, 

 Peru, February 21, 1910, on foliage. 



Blackish, silvery-cinereous pollinose. Frontalia, cheeks, second 

 antennal joint, and shafts (not including ends) of tibiae fulvous or 

 yellowish-brown, the palpi paler yellowish. Parafacials, parafrontals, 

 occiput, mesoscutum and pleurae silvery-cinerous pollinose, the scu- 

 tellum slightly so. Pollen continued over all of abdomen, except that 

 the posterior borders of second and third segments appear more 

 shining. Third antennal joint but little longer than the slightly 

 elongated second. Wings slightly yellowish on base, the color fol- 

 lowing the longitudinal veins, the crossveins black. 



Type.—CsiC'No. 15210, U.S.N.M. 



MEGAPROSOPUS ANDINUS, new species. 



Microphihalraa, sp. Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, p. 137. — ^TD 

 3915. 



Length of body, about 14 mm.; of wing, 13 mm. Numerous speci- 

 mens of both sexes, Matucana, in the valley of the Rio Rimac, western 

 slope of Cordillera Occidental in central Peru, about 7,800 feet, April 

 4, 1910, on flowers of species of Cyclanthera. 



Brownish-red in general ground color; the mesoscutum, disk of first 

 abdominal segment, anterior discal part of second segment, anterior 

 median triangle on third and another on fourth segment, and front 

 blacldsh. Face, cheeks, and occiput faintly brassy-cinereous pollinose. 

 Antennae reddish,. palpi yellowish. Frontalia brownish. Scutellum 

 and edges of mesoscutum brownish-red, the abdomen except as above 

 noted being of a rather deeper red. Legs and pleurae of a lighter 



