AMERICAN DIPTERA. 241 



a large occipital spot greenish. Autenuse black. Cheeks broad. Palpi black. 

 Thorax olivaceous, slightly grayish, sciitelluni, metanotum aud pleurpe white- 

 poUinose. Abdomen grayish, with an olivaceous tinge, venter white-poJlinose. 

 Hypopygium of the male reflexed, of the same color as the abdomen. Legs 

 slender, black, with short black pile, no apical hairs on the femora, empodium 

 equal to the pulvilli. Halteres piceous, the base paler. Wings cinereous, 

 the stigma obsolete, long, very pale, subfuscous, the first two veins fuscous, the 

 others black, costal setulse very small, the second longitudinal vein straight, the 

 second submarginal cell short, apex of the discal cell sharp, the second posterior 

 cell cuneiform, no sixth vein. Length 4.3 mm. 



Hudson Bay Territory. 



It is possible that Walker's Heliodromia is Loew's species. The 

 short description of longipes agrees very well with that of siviplex, 

 but in the absence of specimens it would be premature to change 

 the synonymy. 



Cliuocera lepida sp. nov. 



Length 3.5 mm. — Black, covered with dull dark olivaceous pollen ou the upper 

 surface and on the legs, and with whitish but not silvery pollen elsewhere, i. e., 

 on the lower part of the face, the cheeks, the pleurae aud the venter. Eyes 

 small, unemarginate, not dividing the large cheeks from the face. Proboscis 

 short, fleshy, black, palpi black. Antennae distinctly three-jointed, black, the 

 joints subequal, the third joint ovate, arista not longer than the antenna. Acro- 

 stichals not developed. Scutellum with only two bristles. Coxse with a few 

 pale hairs apically. Legs slender, black, front femora a little thickened and with 

 a row of minute fine hairs beneath vanishing apically, sides of the femora devoid 

 of long apical bristles, empodium prominent, golden yellow, larger than the 

 claws or the pulvilli. Halteres wholly black. Wings hyaline, lightly cinereous, 

 unspotted, rather broad, veins black, the third vein thickest, second submarginal 

 cell long; the base of the second submarginal cell, the base of the second poste- 

 rior, and the apex of the discal cell have almost the same angulation ; second 

 basal and anal cells of nearly equal extent apically, anal vein wanting; costal 

 setulse very minute. 



One female ; Juliaetta, Idaho (Prof. J. M. Aldrich). 



This species agrees with Chamcedipsia Mik, except for the lack 

 of the characteristic thoracic bristles. From Clinocera (sen. strict.) 

 it differs in that the larger cheeks are not constricted off from the 

 clypeus. Both of these characters received much stress from Mr. 

 Mik. 



^ Clinocera doIicheretHia sp. nov. 



Length 4-5 mm. — Black, coated with olivaceous above aud cinereous beueath. 

 Face wholly white dusted. Antennee very short, black, the joints minute, the 

 arista four times the length of the third joint. Clypeus reaching below the eye, 

 but distinctly separated from the cheeks. Palpi aud proboscis black. Occipital 

 bristles dense, scattered over the vertex, the lower cilia proujinent. No acro- 

 stichal nor intermediate dorso-central bristles ; scutellum with two minute bris- 



TRANS. AM. KNT. SOC, XXVIII. (31) JULY, 1902. 



