46 
6. Thorax destitute of a large spot of yellowish pollen in front of the 
Scutellianmn Sse ode, ee ei cue ate ee ee ae 7. 
Thorax bearing a large spot of yellowish pollen, elsewhere sub- 
opaque, the sides and suture gray pollinose; abdomen shining 
bluish black, the margin sometimes yellow, on the fourth seg- 
ment grayish pollinose; wings hyaline, brownish costally except 
at base, the brown color extending to middle of discal cell, some- 
times forming a border to the fifth vein and the hind crossvein, 
and containing hyaline spaces; length,6to 7mm. White Moun- 
tains and Franconia, N. H. (Annales Soc. Entomol. France, 
p. 255; 1888. Hyalomyia sp., Brauer and Bergenstamm in 
ITD he ae gen alee os Mae Eee N aceon etter Naser cn JSenestrata Bigot. 
7. Wings destitute of a distinct hyaline spot beyond tip of first vein. 8. 
Wings marked with such a spot reaching from near the costa to 
middle of first posterior cell, elsewhere brown, with hyaline 
spaces and hind margin; costa excessively arcuate, first poste- 
rior cell over half as wide as long; black, the palpi yellow, abdo- 
men shining brassy black, thinly whitish pollinose, thorax, when 
viewed from behind, subopaque, thinly whitish pollinose, two 
subdorsal vittwe, the front end, and behind the suture black; 
calypteres white; frontal vitta at narrowest part two-thirds as 
wide as distance between the posterior ocelli; length, 8 mm. 
Franconia, N.H. A male specimen, collected by Mrs. A. 'T. Slos- 
son. Type No, 3523, U.S. National Museum. .phasioides n. sp. 
So. ebdomenmore.or.less Shimino. .fes 282 4 ae Se ee ee ee oe 10, 
Abdomen opaque, yellowish gray pollinose..............-.... 9. 
9%, Veins on front and hind edges of discal cell bordered with brown; 
black, the palpi yellow; thorax, when viewed from behind, thinly 
whitish pollinose, the front end, behind the suture, and two sub- 
dorsal vittee black; frontal vitta at narrowest part half as wide 
as distance between the posterior ocelli; calypteres whitish; 
wings brown, the base yellowish, the hind margin and centers 
of discal and first posterior cells usually hyaline, costa rather 
strongly arcuate; length, 45 to 6 mm. Clementon, N. J. (May 
10 and 26, 1896), and Potomac Creek, Va. (May 23, 1896). Six 
mnale specimens, collected by C. W. Johnson. Type No, 3524, 
U.S. National Museum: . 2.22" 2). eee eee eee Jumosa n. Sp. 
Veins on front aud hind edges of discal cell not bordered with 
brown, wings whitish hyaline, the base to beyond the humeral 
crossvein yellowish, costal margin beyond this to slightly below 
apex of third vein, last two sections of third vein, and fourth vein 
beyond the bend bordered with smoky brown, costa excessively 
arcuated; length, 7 mm.; otherwise as in the above descrip- 
tion of fumosa. Grimsby, Canada. A single male specimen, 
collected October 7, 1894. Type No. 3525, U. S. National 
Museum” .2. 22s = Seetiers tec! ee enn ee ree pulverea, Ui, Sp. 
