.1. K. MALLOCH 145 



Male. — Eyes bare; frons at narrowest i)art about one-sixth as wide as 

 head; parafacial broad, at its narrowest part distinctly wider than third 

 antennal joint, broader at base of antennae and vibrissa! angle, the profile 

 concave, vibrissa! angle in line with lower margin of eye; cheek nearly twice 

 as high as width of parafacial, its lower margin with a series of bristles and 

 above these some setulose hairs, one of which at anterior end of series is up- 

 curved (fig. 29); longest hairs on arista not longer than its basal diameter. 

 Presutural acrostichals absent; postsutural dorso-ventrals three; prealar 

 bristle about one-third as long as the one behind it; hypopleura bare; sterno- 

 pleurals 2:2. Abdomen narrowly ovate; hypopygium small; basal sternite 

 bare; fifth with a broad posterior excision, its surface with numerous strong 

 bristles. Fore tibia unarmed at midtlle; mid femur with an almost comi)lete 

 ■ series of postero-ventral bristles; mid tibia with three or four posterior bristles; 

 hind femur with a complete series of bristles on both antero- and postero- 

 ventral surfaces; hind tibia with two to four antero-ventral and two antero- 

 dorsal bristles, the posterior and postero-dorsal surfaces on their apical half 

 with some short setulae. Third vein with a few setulae at base; veins three 

 and four divergent at apices. 



Feinale. — Differs from the male in having the frons over one-third of the 

 head-width, and the postero-ventral surface of the hind femur without bristles. 



Length, 7.5 to 8.5 mm. 



Type.—d^; iMonida, Montana June 27, IDKi, [Illinoiyj. Allo- 

 ti/pe. — 9 ; Tennessee Pass, Colorado, July 24, 1917. 



EULIMNOPHORA gen n. 



Differs from Liitinophura in having the Ijasal abdominal slernile 

 with a few setulose hairs, and the prosternum and base of third 

 wing-vein bare. 



Genotype. — Lininophura arcuata Stein. 



Eulimnophora cilifera sp. n. 



Malt and female. — Black, densely gray pruinescent. Thorax with three 

 rather poorly defined brown vittae. Abdomen of male with basal dorsal 

 segment, except its posterior margin, black, segments two and three each 

 with a pair of large subtriangular black spots; abdomen of female less dis- 

 tinctly marked than that of male, the spots less clearly defined; the larger 

 bristles with their bases surrounded by blackish dots. Legs black, the knees 

 more or less reddish. Wings clear. Calyptrae white. Halteres yellow. 



Male. — Eyes separated at narrowest part of frons by about the width of 

 anterior ocellus; third antennal joint rounded at aj^ex, its length over twice 

 t hat of second ; arista with very short pubescence ; parafacial in profile almost 

 linear^ cheek about as high as width of third antennal joint. Thorax with 

 the presutural hairs four-rowed; four pairs of i)ostsutural dorso-centrals 

 present. Abdomen subovate; basal sternite with a number of hairs on each 

 •side; fifth sternite glossy black, with numerous long hairs round margin of 



TRANS. .VAI. ENT. SOC, XLVI. 



