NO. 2152. NEW MUSCOID FLIES— TOWNSEND. 317 



times second, broadened, strongly and evenly convex on upper edge. 

 Arista slightly longer, thin on apical third or so. Eyes with longer 

 hah, descending barely to bend of faciaha. Front at vertex fully 

 one-third to three-eighths head-width; less than half same anteriorly. 

 Parafaciaha narrowed below to about one-third their upper width. 

 Facio-orbitals descendmg nearly as low as the eyes. Cheeks fully 

 one-third eye-height, wider than long. Wings a little shorter. 

 First vein bristled on over the proximal half, ending opposite small 

 cross vem. Third vem bristled far beyond small cross vem, on fully 

 or more than its proximal half. Apical cell very narrowly open, 

 ending as far before tip as length of apical cross vein. Cubitus half- 

 way between front and hind margins and only a httle farther from 

 tip, with short stump; apical cross vein rather evenly curved in. 

 Posterior cross vein curved outward, its insertion a little distad of 

 its origin; latter a httle nearer to small cross vein than to cubitus. 

 Fifth vein bare, its last section barely half as long as preceding sec- 

 tion. Claws shorter than last tarsal joint. Hypopygium somewhat 

 larger. 



EUCYRTOPHLOEBA RHOIS. new species. 



Length of body, 6.5 to 7 mm.; of wing, 4.75 to 5 mm. Two males, 

 head of Rio Piedras Verdes, Sierra Madre of Chihuahua, Mexico, 

 about 7,300 feet, July 15 and 19, 1899, both on flowers of Rhus cis- 

 montana (Townsend). 



Palpi and first two antennal joints fulvous to pale rufous; fron- 

 taha dark rufous to brownish; third antennal joint and arista black. 

 Parafrontals black, thuily silvery to pale yellowish pollinose; face 

 and cheeks thickly yeUowish-silvery pollinose, the cheeks almost 

 golden. Occiput ashy. Thorax and scutellum black, moderately 

 silvery pollinose, with more or less of a very faint brassy tmge; four 

 vittae showing, the inner ones narrower. Abdomen shining black, 

 the rather narrow bases of last three segments silvery-white poUinose; 

 the rest very thinly pollinose as seen in obhque view. Legs dark 

 brown; tarsi blackish. Wings nearly clear, the costal border smoky, 

 the cross veins narrowly infuscate. Tegulae Ughtly smoky, the front 

 scale whitish. 



Holotype.—^o. 20045, U.S.N.M. 



ZIZYPHOMYIA, new genus. 



Genotype. — Zizypliomyia celer, new species. 



Differs from DoryplioropJiaga as foUows: Male. Vertex fuUy one- 

 third head-width or rather more, the front and face widening evenly 

 therefrom. Frontaha quite as wide as one parafrontal. Eyes bare. 

 Two closely approximated reclinate orbitals, no proclinate ones. 

 Frontals not so closely set; outside them some microchaetae or short 

 bristles. Parafrontals and parafacials wide, of about equal width 



