NOKTII AMERICAN DIPTKRA. 289 



pollinose, except posteriorly, first sej;nieiit silvery below, nitiier opaque black 

 above; first two segments with a small lateral macrochiPta, -Ijut no median ones, 

 third witli a marginal row. posterior half of anal segment beset with bristles. 

 Legs black, femora silvery on outside, hind tibia; thickly ciliate on outer edge, 

 claws and pulvilli elongate, pulvilli fuscous. Wings nearly hyaline, slightly 

 grayish, vei-y faintly brownish at base and more or less so on co-sta, tegulse white ; 

 halteres light rufous, knobs tawny. Length : body, 9-11 mm. ; wing, 7 — 9 mm. 



Described from three specimens; Ithaca, N. Y. Two of them 

 bred by Prof. J. II. Comstoc-k from Datann sp. Issued August 21st 

 and September 9th. 



Phorocera lopliyri n. sp. %. — Eyes dark brown, rather thickly pubes- 

 cent; front averaging one-third width of head, frontal vitta dark biown. about 

 one-fourth width of front; sides of front brassy or golden, with weaker bristles 

 outside frontal bristles, no orbital bristles; face silvery white, cheeks silvery 

 cinereous; vibrissse inserted on oral margin, facial ridges with bristles nearly to 

 lowest frontal bristles; antennae as long as face, black, second joint more or less 

 rufous, third joint about three and a half times as long as second, rather wide 

 and stout, arista black ; proboscis" brownish, palpi very slender, a little thickened 

 at tip, yellowish ; occiput silvery or cinereous, gray hairy. Thorax black, thinly 

 silvery pollinose, with four bla(!k vittse, the outer ones interrupted at suture; 

 scutellum black, somewhat rufous or testaceous on apex. Abdomen shining 

 black, bases of segments two to four broadly silvery pollinose with a brassy 

 tinge, venter silvery ; first two segments with a median marginal pair of macro- 

 chsetfe, third and anal with marginal rows (as nearly as I can determine from 

 the scars, the bristles having been broken off). Legs black, front femora silvery 

 on outside, middle and hind tibiae with spiny bristles; claws and pulvilli elon- 

 gate, pulvilli tawny fuscous. Wings grayish hyaline, tegulse dirty whitish, 

 halteres brownish rufous. I^eugth of body, 6 mm. ; of wing, 4.5 mm. 



Described from one specimen ; Ottawa, Can. Bred by ^Ir. W. 



Hague Harrington from hirva of Lophyras abietis. Issued July. 



TRANS. AM. ENT. SUC. XIX. (37) UKCKMBER, 1S92 



