No. 2301. J^EW SPECIES OF MUSCOID FLIES— TOWNSEND. 573 



almost imperceptibly brassy. Palpi fulvo-rufous. Four faint tho- 

 racic vittae, the inner ones narrow. Abdomen thinly silvery on 

 forward half or so of last three segments, the pollen thickening basally. 

 Tegiilae white. Wings clear. 



One of the females was labeled by Coquillett '' Masicera strigata 

 Wulp." 



Type.— C&t. No. 22208, U.S.N.M. 



AUSTROLYDELLA, new genus. 



Genotype. — Austrolydella assiTnilis, new species. 



Allied to Stomatolydella. Clypeus nearly twice as long as wide. 

 Epistoma moderately warped, Facilia ciliate halfway. Proboscis 

 little over half-head height; palpi thickened or widened at tip. 

 Third antennal joint about two and one-half times second. Eyes 

 thickly pilose in male, thinly so in female. Male front about one- 

 fourth head width, equilateral throughout; female vertex not one- 

 third head width. Ocellars moderately strong. Parafacialia as 

 wide as facialia below in male, a little wider in female. Cheeks fully 

 one-fiftli eye length in both sexes. Three lateral scutellars, hind 

 pair longest and more or less divaricate. A moderately long erect 

 decussate apical pair of scutellars. Apical cell open some distance 

 before tip. Tarsi short. Median marginal pair on first three abdom- 

 inal segments; median discal pair on intermediate segments; and 

 marginal and discal rows on anal segment; macrochaetae of normal 

 length. Female with sharp piercer but without ventral carina or 

 short spines. Otherwise mainly as in Stomatolydella. 



AUSTROLYDELLA ASSIMILIS, new species. 



Length, 6 to 6.25 mm. One male and one female, Santa Eulalia, 

 Peru, 3,500 feet, April 28, 1914, on foliage (C. H. T. Townsend). 



Blackish, silvery to golden pollinose. Male head and upper parts 

 thinly silvery; female head and upper parts more thickly pollinose, 

 distinctly golden, especially on front. Palpi subfulvous distally. 

 Four blackish thoracic vittae. Pollen of abdomen more dense on 

 basal half of last three segments; the posterior half of each segment 

 and median vitta rather shining. Wings clear. Tegulae whitish. 



Type.— Cat. No. 22222, U.S.N.M. 



MEIGENIELLOIDES, new genus. 



Genotype .— Meigenielloides cinerea, new species. 



Clypeus gently sunken. Epistoma cut off, rim warped, Facialia 

 bare. Proboscis very short; palpi stout and bowed. Third anten- 

 nal joint about twice the elongate second, gradually widening to the 

 subtruncate tip in female. Arista long, bare. Eyes bare. Female 

 vertex not one-third head width. Three frontals below base of 

 antennae. Two proclinate fronto-orbitals in female. Ocellars pres- 



