12 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. OS 



Female. — For color characters see key to color varieties and de- 

 scriptions below. Eighth sternite evenly convex posteriorly (fig. 

 100) ; due to posture of the sternite, it sometimes appears a little 

 pointed medially, or a little emarginate laterally, but the hind 

 margin, as well as ma}' be is smoothly rounded. 



Length, 3.5-4 mm. 



This species often has the second apical cell long-stalked, but this 

 character is quite variable as in other species of the genus. 



KEY TO THE COLOR TAKIETIES OF COMMISSURALIS 



1. At least the free margins of scutellum, and the commissure, dusky to black ; 

 these markings usually covering most of scutellum and (he inner margins 



of tegmina broadly var. commissuralis Stal. 



Entirely lacking dark markings above var. muiida, new variety. 



TYPHLOCYBA COMMISSURALIS, var. COMMISSURALIS Stal 



The general coloration above varies from whitish to greenish 

 yellow, and the scutellum and commissure have dark markings as 

 noted in key. Underparts whitish to yellowish. 



Eecords : Vancouver, B. C, C. F. Baker ; Kaslo, B. C, July 17, A. 

 N. Caudell (U.S.N.M.) ; Victoria, B. C, August 30, 1921, on Loin- 

 bardy poplar; November 11, 1921, on alder; Penticton, B. C, Sep- 

 tember 22, 1919, W. Downes (Downes) ; Easton, Wash.; Lake Tahoe, 

 Placer Co., Calif., September (U.S.N.M.) ; Hamilton, Calif., June 

 22, 1908, Colfax, Calif., June 23, 1908 (Ball) ; Idaho, C. F. Baker; 

 Colorado, 2284 (U.S.N.M.); North Park, Colo., August 20, 1899 

 (Ball). 



TYPHLOCYBA COMMISSURALIS, var. MUNDA, new variety 



Like the typical variety except for entire lack of dark markings 

 above. 



Holotype. — Male, paratype male, allotype and paratype females, 

 Vancouver, B. C, C. F. Baker (U.S.N.M.). 



Paratypes: N. Westminster, B. C, September 14, 1920, V/. Downes 

 (Downes); New York, September 1, 1919; Saanich District, B. C, 

 September 12, 1918, W. Downes (Ball). 



A male too much damaged to be designated a paratj^pe, 2 miles 

 west St. Louis, Mo., April 25, 1904, W. V. Warner (U.S.N.M.). 



Uolotype^ allotype^ and paratypes. — Cat. No. 28488, U.S.N.M. 



TYPHLOCYBA EUPHRANTE, new species 



Male. — General color above pale yellow, at its deepest approaching 

 cadmium yellow; scutellum paler; apical cells faintly fumose 

 hyaline; underparts stramineous to pale yellow. Hypopygium: 

 Upper posterior angle of ninth segment well rounded off, with 

 several strong bristles, lower angle produced in a distinct posteriorly 



