53 
sides of face bare except for the row of macrochete, cheeks 
two-fifths as wide as the eye-height; thorax thinly gray polli- 
nose, marked with four black vittwe; scutellum bearing three 
pairs of long marginal macrochietie ; abdomen subshining, bases 
of last three segments lightly whitish pollinose, first segment 
bearing a marginal pair, second with a discal and a marginal 
pair of macrochete, third with a discal pair and a marginal 
row, fourth wholly covered except the extreme base; wings 
tinged with brown along the veins; calypteres yellowish white; 
length,7 mm. Fort Wrangel, Alaska. A single female speci- 
men collected. by H. EF. Wickham. Type, No. 3531, U. 8S. 
PN auto male Mie MAY as 2522 eects o's ay spinosa n. Sp. 
Sides of face each bearing only one or two macrochietie, situ- 
ated near lower end of eyes; black, the antennie, palpi, tip of 
scutellum and fourth segment of abdomen yellow; front in both 
sexes one and two-thirds times as wide as either eye, the sides 
and face yellowish pollinose, two pairs of orbital bristles, frontals 
descending to base of third antennal joint, sides of face covered 
with black bristly hairs, cheeks three-fourths as broad as the 
eye-height, antennae three-fourths as long as face, the third joint 
six times as long as the second, arista thickened on the basal 
third or half; thorax gray pollinose, marked with three black 
vittze, scutellum bearing three long marginal pairs and a short 
apical pair of macrochete; abdomen thinly gray pollinose, 
subshining, last three segments bearing discal macrochetie; 
wings subhyaline, veins faintly clouded with brown; length, 6 to 
7mm. Opelousas, La. Three males and one female collected 
im’ March, 1897, by Mr. G. RR. Pilate ..-....:-.2.-setigena n. sp. 
Genus ADMONTIA Br. and Berg. 
Admontia Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, IV, p. 104; 1889. 
On page 410 of Part V of the above-mentioned work, a species from 
“N. Amer.” is listed as ** Admontia americana n.,” but no description 
of it has to my knowiedge been published. Our four species have only 
three postsutural macrochietee : 
1. Wings wholly hyaline, or slightly smoky costally, usually three 
RICEnO PLetMlaemacrochetcen: vee. 2 o-oo. oe gee 2. 
Wings whitish hyaline to small crossvein, the remainder brown 
except the hind margin, which is hyaline; only two sternopleu- 
ral macrochete, palpi yellow, legs black, arista thickened to 
beyond the middle, cheeks one-half as broad as the eye height; 
length, 7 mm. Northern Illinois. (Journ. N. Y. Ent. Soc., Vol. 
PUES aoS POMMOATOOO.). 2.02. ieee Sea See Yass nasoni Coq. 
2. Legs black, two pairs of orbital bristles in both sexes...........- 3. 
Legs and palpi yellow, no orbital bristles in the male, arista thick- 
ened on less than the basal third, cheeks one-third as broad as 
