106 C. H. TYLER TOWNSEND. 



costal spine, third vein bristly at base; apical cell closed in margin 

 well before tip of wing; fourth vein bent at an obtuse angle, without 

 stump or wrinkle, or exceptionally with a slight stump, apical cross- 

 vein concave; hind cross-vein sinuate, considerably nearer to bend 

 of fourth vein. Type, N. anomala n. sp. 



SiTeotractocera anomala n. sp. J.— Eyes dark brown, frontal vitta 

 light brown, sides of front, face and cheeks silvery, prse-genal area reddish brown ; 

 four pairs of ocellar bristles, the anterior pair strongest, directed forward and 

 outward : antennse brownish yellowish, arista nearly black, second antennal joint 

 with a pair of strong bristles on front edge : proboscis dark brown, labella tawny, 

 palpi pale yellow, black-bristly ; occiput cinereous or silvery, black-hairy. Tho- 

 rax silvery, with three well-defined blackish vittse, the outer ones reaching scu- 

 tellum ; scutellum brownish yellow, silvery pollinose. Abdomen yellowish 

 brown, silvery pollinose, with a broad black median vitta extending from base 

 of first segment to tip of anal segment; first segment at most with some lateral 

 bristles, second with one or two lateral macrochfetse and a median marginal pair, 

 third with about ten marginal, and anal with about eight marginal and ten discal 

 macrochsetsE. Legs blackish, tibite and extremities of femora more brownish 

 yellow, femora silvery, femora and tihife bristly; pulvilli small, whitish. Wings 

 grayish hyaline, tegulge nearly white, halteres brownish yellow, knobs whitish. 

 Length of body 7.5 — 8 mm. ; of wing 6 — 6.5 mm. 



Described from two specimens; Las Cruces, N. Mex., July 28th 



and September 21st. 



EUTHYFROSOPA n. gen. 

 Very similar to Neotradocera, and differs only as follows : Front 

 ( 9 ) rather more than one-half width of head, face fully three-fifths 

 width of head; facial depression very narrow, hardly or about one- 

 third width of face, of nearly equal width throughout, with a distinct 

 median carina, moderately deep, very elongate; facial ridges almost 

 parallel, bare, but slightly constricted below; sides of face wider, 

 with some bristles above outside frontal row; cheeks very wide, fully 

 two-thirds of eye-hight. Antennse little more than half the length 

 of face, the third joint about four times as long as second, very nuich 

 more narrowed, pointed at apex, peg-shaped; arista 3-jointed, curved, 

 second joint somewhat elongate. Proboscis still shorter, not as stout, 

 palpi very small, short, thickened at tip. Abdomen not much wider 

 than thorax, oval in outline, not flattened. Wings longer than ab- 

 domen, only moderately broad, with costal spine; apical cell petio- 

 late, terminating well before tip of wing, apical cross-vein straight; 

 fourth vein curved or bent, hind cross-vein about in middle (if 

 curved), or slightly nearer bend of fourth (if bent). Type, E. 

 petiolata n. sp. 



