46 



6. Thorax destitute of a large spot of yellowish polleu in front of the 



scntellum 7. 



Thorax bearinij a large spot of yellowish pollen, elsewhere sub- 

 opaque, the sides and suture gray pollinose; abdomen shining 

 bluish black, the margin sometimes j'ellow, 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, to 7 mm. White Moun- 

 tains and Franconia, N. II. (^ N .u niilp'g Soci li^ntonu jJ France, 



p.— ■•jSjt" l^iJT j ): — Utfuhmyia ajr^" Braner and Bergenstanim in 

 litt.) . .^. .^.kl e.^.oliX^. . .<-r^*<.' fcnc i ifratt t Eig ot. 



7. Wings destitute of a distinct hyaline spot beyond tip of first ^•ein . 8, 

 Wings marked with such a spot reaching from near the costa to 



middle of first posterior cell, elsewhere brown, with hyaline 

 spaces and liind margin; costa excessively arcuate, first poste- 

 rior cell over half as wide as long; black, tlie palpi yellow, abdo- 

 men shining brassy black, thinly whitish pollinose, thorax, when 

 viewed from behind, subopaque, thinly whitish pollinose, two 

 subdorsal vittu', 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 Mnseiim^phasioidcs n. sp. 



8. Abdomen more or less shining 10. 



Abdomen opaque, yellowish gray pollinose 9. 



0. A'eins on front and hind edges of discal cell bordered witli brown; 

 black, the palpi yellow ; thorax, when viewed from behind, thinly 

 whitish pollinose, the front end, behind the suture, and two sub- 

 dorsal vitta^ 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, 4:.C to mm. Olementon, N. J. (May 

 10 and 20, 1896), and Potomac Creek, Va. (May 23, 1896). Six 

 male specimens, collected by C. W. Johnson. Type No. 3524, 



IT. y. National Museum /7 fumosa n. sj). 



Veins on fiont and hind edges of discal cell not bordered with 

 brown, wings whitish hyaline, the base to beyond the humeral 

 crossvein yellowisli, 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. (Irimsby, Canada. A single male specimen, 

 collected October 7, 1894, Tyi)e No. 3525, U. S. National 

 Museum Ct'^.pulverea, n. sp. 



