NATHAN BANKS. 31 



Polyceiitropus caiiaclousi!^ n. sp. — Length 6 mm. ; alar expanse 11 mm. 

 Head and thorax with lono; white hair, patches of black above eyes and just 

 before bases of wings ; antennse pale, annulate with brown. Legs yellowish, 

 faintly marked on the tarsi. Wings blackish, thickly spotted with white, i-ather 

 larger at posterior base and at cubitus; hind wings uniform gray, with a white 

 fringe behind ; both branches of radial sector forked, the upper one much beyond, 

 and the lower just before the cross-vein ; both branches of cubitus forked, the 

 lower nearer the base; spurs 3-4-4. 



Two specimens, Sherbrooke, Canada, July (L'abbe P. A. Begin). 

 Recognized by its small size and mottled wings. 



Bersea nigritta n. sp. — Length 4 mm. Head black, shining, broad, with a 

 rather rounded ridge from eye to eye, a small pitted tubercle each side above, and 

 two pale tubercles below the ridge near the middle ; basal joint of antennse black, 

 rest pale; palpi pale, with black hair; legs pale, mostly with white hair, but some 

 black, a few black spines on tai-si, hind tibia very much longer than femur, 

 spurs 2-2-4; thorax and abdomen black. Wings blackish, with pale veins and 

 black hairs, veins indistinct, no cross-veins seen, lower branch of radial sector 

 and lower branch of cubitus forked. Abdomen with a sharp slender spur below 

 before tip. 



Two specimens, Sea Cliff, N. Y., June. 



Olossosoina aiiiericana n. sp. — Length 9 mm.: alar expanse 16 mm. 

 Pale, head yellowish, darker above, with luteous hair: antennte yellow, apical 

 half fuscous; palpi pale brownish; thorax pale, with luteous hair; legs pale 

 yellowish, spurs blackish, coxaj fuscous. Abdomen light brown. Wings hyaline, 

 .sparsely clothed with luteous and gray hair, some near tips of fore wings and the 

 fringe darker gray, veins luteous, a white mark at end of thyridial area, a spot 

 on forking of cubitus, and another at arculus; antennte shorter than the body, 

 slender; basal joint a little enlarged; third and fifth joints of palpi siibequal, 

 fourth a trifle short-er. Legs moderate, hind tibiie quite slender and curved, tibia 

 and first tarsal joint enlarged in second legs of 9 ; spurs 2-4-4. the upper pair 

 on hind legs about their length before the apical pair, above them are three small 

 yellow spines; wings moderately broad, rounded at tip, discal cell in both pairs 

 dosed, radius above the middle of discal cell in fore wings suddenly, but slightly 

 bent, an oblique cross-vein connecting the cell and the radius, fifth apical cell 

 almost reaching the anastomosis; near the tip of the ante-penultimate ventral 

 segment of the f 'S a distinct conical tooth. 



One female, Franconia, N. H. (Mrs. A. T. Slosson). 



TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 



