No. 2301. 2fEW SPECIES OF MUSCOID FLIES— TOWNSEND. 561 



MICROAPORIA ELEGANS, new species. 



Length, 4.5 mm. One male, Cuzco, Peru, February 21, 1910 

 (C. H. T. Townsend). 



Dark brown or blackish, rather thinly silvery. Antennae and 

 palpi black. Frontalia and cheek grooves soft blackish-brown. Rest 

 of head thinly silvery, with blackish reflections In varying light. 

 Thorax and scutellum thinly silvery; two very broad black vittae on 

 thorax, reaching on sides of scutellum; similar wide vitta on pleura 

 from wing root to lower humeral region, also extending back to 

 halters. Abdomen subshining dark brown, basal half of last three 

 segments thinly silvery polhnose, changing to brassy in varying light. 

 Legs brown. Wings clear. Tegulae whitish, somewhat fuscous on 

 inner edge. 



Type.— C&t. No. 22238, U.S.N.M. 



Tribe LESKHNI. 

 TROCHILOGLOSSA, new genus. 



Genotype. — TrocMloglossa tropica, new species. 



Clypeus flush. Epistoma wide, strongly warped, nearly half as long 

 as clypeus. Facialia bare. Haustellum about two and one-half 

 times head height, nearly long enough to reach tip of abdomen; 

 curved backward; palpi long, subcylindrical. Third antennal joint 

 about one and one-half times second. Arista bare; basal joints short. 

 Eyes bare. Frontals diverging one bristle at base of antennae. 

 Two proclinate fronto-orbitals of female crowded nearly into frontal 

 row. Ocellars present. Parafacialia narrow, bare. Cheeks not over 

 one-fifth eye length. One postacrostichal; two postintraalars, pre- 

 acrostichals and lateral scutellars ; three sternopleurals and postsutur- 

 als. A weak divergent apical scutellar pair. Third vein bristled only 

 at base, others bare. Apical cell narrow, open a little before tip. 

 Posterior crossvein nearer to cubitus. No median marginals on first 

 segment; median marginal pair on second; marginal row on third and 

 anal segments. 



TROCHILOGLOSSA TROPICA, new species. 



Length, 8 mm. One female, Chapada, Brazil (H. H. Smith). 



Tawny flavous. Head and tiiorax silvery pollinose; scutellum and 

 abdomen less thickly so. Pleura and posterior half of abdomen 

 darker in ground color, cinereous pollinose. Frontalia, antennae, 

 palpi and legs yellowish; the tarsi darker. Wings clear, with yellowish 

 along the veins. Tegulae watery-white. 



Type. — In American Museum of Natural History. 

 115690— 19— Proc.N.M. vol.56 36 



