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another on the apex of tlie discal areoles, and a Iar_<;er one on the anti-apicals 

 wliitish hyaline. Winj^s subhyaline, nervures |>ale brown. Beneath yellow 

 or fulvous, sometimes obscured on tiie venter and marked with black on the. 

 pectoral pieces, front of the femora and tibia\ Last ventral segment sub- 

 triangular, produced medially in two distinct, subacute teeth. 



The male differs from the female only in being paler, at least on the front, 

 and in having the elytra of an almost uniform fulvous brown tint with hardly 

 a trace of the hyaline spots. 



Buffalo, N. Y., June-August; Muskoka, Ont., July, 1888; 

 Ridgeway, Ont., A.M. Kilnian; Mt. Balsam, N. C, July 26, 1890, 

 W. J. Palmer, Jr. Lives on birch. It is subject to considerable 

 \ariation in the tint of its general color and the distinctness of the 

 fenestrate markings of the elytra. PVom the preceding species it 

 may be distinguished by the form of the last ventral segment of the 

 female, from pfiini by its clouded elytra, and from minor by its 

 larger size, deeper color and the larger teeth of the last ventral 

 segment. 



6. Bythoscopus pruni Prov., Petite Faune Ent. du Can. iii, p. 290, 1890. 



Atliysa)ins priDii Fitch, MS. 



Cinereous or grayish yellow, punctured with fuscous; coriiun hyaline, 

 with the apex and a transverse spot fuscous; face yellowish; vertex banded 

 with black. Length 4-4.5 mm. 



Face yellow; front and apex of the clypeus blackish in the female; 

 vertex black, with a broad j-ellowband connecting the ocelli; front and vertex 

 coarsely punctured, the latter slightly tumid on the middle. Eyes brown, 

 ocelli black. Pronotum yellowish cinereous, more or less obscured with 

 fuscous punctures and commcnily showing two or three black points on the 

 calloused area behind the eye; surface with the transverse striae and scatter- 

 ing punctures more obvious posteriorly; scutellum cinereous, yellowish, or 

 sometimes ferruginous, marked as in distinctus. Elytra hyaline, more or less 

 obscured, commissural nervure whitish, interrupted on its middle by a fus- 

 cous spot and with a smaller one at tip, nervures brown, apex of the corium 

 clouded with brown, the transverse nervures fuscous margined. \\'ings ob- 

 scurely smoky hyaline, nervures brown. Beneath yellow, pleural pieces 

 marked with black; tergum blackish, the segments pale margined. Legs 

 pale, spines of the hind tihite and a line on their face at base brown. Genital 

 characters as in fenestiafiis. 



Described from ten males and four female specimens. Mus- 

 koka, Ont., July, 1888; Quebec, Provancher; Ottawa, Out.. Har- 

 rington; Saskatchewan, July 22d; White Mountains, " subalpine" 

 Scudder; Ma.ssachusetts and Maine. The specimens from the four 

 last mentioned localities were recei\X'd from Mr. L'hler; that from 

 the White Mountains bearing the label '' Athysanus pruni Fh." 

 >L Provancher' .s example came labeled '' Pediopsis cindifrons," 

 which he afterward discarded for the one here employed. 



