104 (;. H. TYLER TOWNSEND. 



• 



directed downward and more or less backward, bristly hairs outside 

 frontal bristles, sometimes in distinct rows; one orbital bristle in 9 , 

 none in % . Face receding, epistoma prominent; facial depression 

 three-fifths or less width of face, wider below, of moderate depth, 

 with a more or less distinct median carina, facial ridges bare, except 

 a few bristles next vibrissse, constricted below; sides of face moder- 

 ately wide, nearly bare, except the descending frontal bristles; cheeks 

 short, but wide, nearly or about one-half eye-hight, hairy posteriorly 

 and with bristles on lower border; vibriss?e rather strong, decussate, 

 inserted almost on oral margin. Eyes distinctly and moderately 

 thickly pubescent, descending over two-thirds as low as oral margin. 

 Antennpe inserted on or above a line drawn through middle of eyes, 

 fully or nearly as long as face, very elongate and large or only moder- 

 ately so, first and second joints rather short, third joint five or six 

 times as long as second; arista moderately long, more or less curved, 

 microscopically pubescent, thickened more than one-half its length, 

 3-jointed, second joint short. Proboscis as long as hight of head or less, 

 rather stout, fleshy, labella well developed; palpi moderately long, 

 slender, more or less thickened at tij). Thorax about as wide as head; 

 scutellum with an apical decussate pair of macrochsetse, a stronger 

 lateral pair next these extending about to base of third abdominal 

 segment, another lateral and a weak discal pair. Abdomen more or 

 less ovoconical, not wider than thorax, first segment hardly shortened; 

 macrochsetse only marginal, unless on anal segment; hypopygium of 

 % rather concealed. Legs of moderate length, rather bristly; claws 

 and pulvilli of % somewhat elongate, of 9 shorter. Wings a little 

 longer than abdomen, with costal spine, third vein spined about to 

 small cross-vein ; apical cell moderately long petiolate, short petiolate, 

 or closed in margin, terminating well before tip of wing; fourth vein 

 bent at an angle, with or without a very slight wrinkle at bend, apical 

 cross- vein more or less concave; hind cross- vein sinuate or nearly 

 straight, nearer to bend of fourth vein. Type, L. magaicornis n. sp. 



liaclinouiina inagiiicoriiis n. sp. "J, . — Eyes dark brown, frontal vitta 

 nearly black, sides of front, face and cheeks silvery white, darker in some lights ; 

 anterior pair of ocellar bristles strongest, directed anteriorly; antennae and 

 arista black ; proboscis dark brown, palpi pale yellowish ; occiput cinereous, 

 thickly gray-hairy on lower half, fringed with black hairs on orbital margins. 

 Thorax silvery, with two black vittse extending about to scutellum ; scutellum 

 silvery. Abdomen black, second to fourth segments rather broadly silvery white 

 at base; first segment with a lateral macrochpeta, second with a lateral one and 

 a median marginal pair, third with a lateral pair and a strong median marginal 



