96 



..* 



Apical pair, etc.; differs from hoarmia' as follows: Front of male 

 slightly wider than either eye, his third aiitennal joint six times 

 as long as the second, antenme and legs black, arista thickenud 

 ou the basal two-fifths, abdomen snbshining, bases of last three 

 segments grayish poUinose, the hairs suberect and rather long, 

 wings strongly tinged with gray at base and along the costa; 

 length, 7 mm. Mt. Washington, N". H. A single male specimen 

 collected by Mrs. A. T. Slosson fronio n. sp. 



Ai^ical pair of scutellar macroch.etie directed backward; scntellum 

 on the apex broadly yellow, front of female four-fifths as wide 

 as either eye, third Joint of antenna; four and one-half times as 

 long as the second, femora black, third vein bearing lour or 

 five bristles at its base; length, 10 mm., otherwise as in the 

 above description of bonrmiw. Franconia, N. IJ. Two female 

 specimens collected by Mrs. A. T. Slosson. Type No. 3.51)2, ir. 



S. National Museum hlandita n. sp. 



13. Scutellum black, pollen of tliorax gray, hind tibia' not ciliate, front 

 in the female one-half as wide as either eye, her third antennal 

 joint three times as long as the second; black, the second anten- 

 nal joint, palpi and apex of proboscis, yellow; sidesof front des- 

 titute of hairs, in the female bearing two pairs of orbital bristles, 

 frontal bristles descending to middle of second antennal joint; 

 thorax gray pollinose, marked with four black vittie, scutellum 

 bearingthree pairs of long marginal macrocha'ta', abdomen whit- 

 ish pollinose, its hairs depressed, apex of fourth segment bare, 

 this segment bearing a discal and marginal row of macroch;et;e; 

 wings hyaline, third vein bearing three bristles at its base, ca- 

 lypteres white; length, 7 mm. Dist. Columbia, A single female 

 s[)ecimen. Type No. 3593, U. S. National iMuseuiu. . .mc n. sp. 



Scutellum yellowish, pollen of thorax yellow, hind tibia; outwardly 

 ciliate, front of male two-thirds as wide as either eye, his third 

 antennal joint four and one-half times as long as the second; 

 black, the palpi, tibia; largely, and scutellum yellow; sides of 

 front bearing numerous bristly hairs, no orbital bristles in the 

 male, frontal bristles descending to apex of second antennal 

 joint, thorax yellowish ])olliuose, marked with four black vitta;, 

 scutellum bearing four pairs of long marginal macrocha'ta^; 

 abdomen wholly gray pollinose, its hairs rather long and sub- 

 erect; wings hyaline, third vein bearing three bristles near its 

 base, front calypteres white, the hind ones yellowish; front 

 pulvilli of male slightly longer than the last tarsal joint; length, 

 10 mm,, White Mountains, N. IF. A single male specimen. 



Type No. 3504, U. S. National Museum helvina n. sp. 



11. With four sternopleural macrocha'ta', hind tibia) outwardly ciliate, 

 nuddle tibia; each bearing two or more macrocha'ta' on the front 

 side near the middle, s(;ntellnin largely yellow, four postsutural 

 macrochaitie, arista thickened to the middle 15. 



