96 
Apical pair, etc.; differs from boarmicc as follows: Front of male 
slightly wider than either eye, his third antennal joint six times 
as long as the second, antenna) and legs black, arista thickened 
on the basal two-fifths, abdomen subshining, bases of last three 
segments grayish pollinose, the hairs snberect and rather long, 
wings strongly tinged with gray at base and along the costa; 
length, 7 mm. Mt. Washington, X. II. A single male specimen 
collected by .Mrs. A. T. Slosson fronto n. sp. 
Apical pair of scntellar macrocha'ta' directed backward; scutellum 
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 four or 
live bristles at its base; length, 10 mm., otherwise as in the 
above description of boarmiw. Franconia, N. II. Two female 
specimens collected by Mrs. A. T. Slosson. Type No. 3592, l T . 
S. National Museum blandita n. sp. 
13. Scutellum black, pollen of thorax gray, hind tibia' not ciliate, front 
in the female one half as wide a8 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: sides of 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 vitta', seiitellnm 
bearing three pairs of long marginal macrochdetae, abdomen whit- 
ish pollinose, its hairs depressed, apex of fourth segment bare, 
this segment bearing a discal and marginal row of macrocha'ta'; 
wings hyaline, third vein bearing three bristles at its base, ca 
lyp teres white ; length, 7 nun. Dist. Columbia. A single female 
specimen. Type No.3593; U. 8. National Museum., ./.svrn.sp. 
Scutellum yellowish, pollen of thorax yellow, hind tibiae 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 pollinose, marked with four black vitta 1 , 
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. II. A single male specimen. 
Type No. 3504, U. S. National Museum helvina n. sp. 
14. With four sternopleural macroclneta', hind tibiae outwardly ciliate, 
middle tibia' each bearing two or more macrocha'ta' on the front 
side near the middle, scutellum largely yellow, four postsutural 
macroclnetaj, arista thickened to the middle 15. 
