No. 2301. NEW SPECIES OF MUSCOID FLIES— T0WN8END. 657 



stopping at base of antennae. Ocellars absent. Parafacialia bare, 

 nearly as wide as clypeus. Cheeks less than one-third eye length, 

 Three sternopleurals, postintraalars, postsuturals, preacrostichals, 

 postacrostichals and lateral scutellars; no apical scutellars. Third 

 vein bristled only at base; others bare. Apical cell narrowly open 

 a little before tip. Hind crossvein nearer to cubitus. Median mar- 

 ginal pair on first two segments; marginal row on third and anal 

 segments. 



MINTHOZELIA MONTANA, new species. 



Length, 5.5 mm. One female, Sixshooter Canyon, Pinal Moun- 

 tains, Arizona, 5,000 feet., September 2, 1917 (C. H. T. Townsend). 



Black, silvery-white poUinose. Frontalia soft brown. Antennae 

 fulvous, tinged with fuscous. Palpi fulvous. Four indefinite change- 

 able thoracic vittae. Anterior border of last three abdominal seg- 

 ments silvery-white, the rest shining black. Wings clear. Tegulae- 

 glassy-white. 



Ty 2)6.— Cat. No. 22204, U.S.N.M. 



OPSOZELIA, new genus. 



Genotype. — Opsozelia discalis, new species 



Zeliine characters in general. Clypeus slightly sunken; epistoma 

 long and strongly warped. Haustellum fully half head height, 

 corneous; palpi stout, nearly as long as antennae. Third antennal 

 joint about four times second. Arista thickly long-plumose to tip, 

 with two rows of cilia above. Eyes bare. Frontals thickly placed in 

 male. Two strong ocellar pairs, Parafacialia hardly over half as 

 wide as clypeus, equilateral, bare. Cheeks hardly one-third eye 

 length. One postintraalar; two preacrostichals and postacrostichals; 

 three sternopleurals, postsuturals and lateral scutellars; no apical 

 scutellars. Third vein bristled about one-third way to small cross- 

 vein ; others bare. Apical cell widely open well before tip. Cubitus 

 near margin, with faint wrinkle. Hind crossvein nearer to cubitus. 

 Male tarsi and claws long and stout. No median marginals on first 

 segment, but a pair on second; three median discal pairs in file on 

 each of intermediate segments; marginal row on last two segments; 

 anal segment with submarginal and discal rows also. Fifth sternite 

 of male large. 



OPSOZELU DISCALIS. new species. 



Length, 13 mm. One male, Bartica, British Guiana, July 10, 1901 

 (through C. W. Johnson). 



Brown to blackish; abdomen largely yellow. Antennae clear deep 

 fulvous; the palpi nearly the same shade. Frontalia soft dark 

 brown, shining in oblique view. Rest of head thickly ashy-silvery 

 pollinose. Thorax and scutellum thickly ashy-silvery; with four 



