6 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



middle of front margin of pronotum, apex of sciitellum, first cross 

 vein and ends of apical veins black or blackish; apical cells dusky 

 f umose, a band across tegmen in front of cross veins a little darker ; 

 below pale yellow (brighter on face), abdomen black with pale edg- 

 ings, outer claspers pale yellowish. 



Hypogium with the lower posterior angle of ninth segment 

 rounded, prominent, projecting farther posteriorl}'^ than the upper; 

 the lower side of the segment a little emarginate subapically. Outer 

 clasper broad basally abruptly contracted about the middle, the 

 shoulder very prominent, the narrow apical portion of about same 

 width to the rounded apex, with definite bristling as in Figure 11; 

 inner clasj)er with a prominent tooth below beginning of apical 

 curvature, apex acute (fig. 12). Aedeagus with the central shaft, 

 fairly stout, upcurved, tapering gradually to near apex and ending 

 in a curved slender bifid process; two stout processes about two- 

 thirds as long as the central shaft arise from the base of the aedeagus, 

 the apical third of each directed outwardly, the apex moderately 

 acute (figs. 13-15). 



Fejiude. — Like the male in color but having in addition two oval 

 dark spots on rondure of vertex; genitalia largely dark. Eighth 

 sternite moderately pointed medially, distinctly emarginate each 

 side of median process and moderately lobate laterally (fig. 105) ; 

 ovipositor sheaths each with a row of about eight conspicuous pale 

 bristles. 



Length, 3.5-4 mm. 



Distribution. — This species occurs over most of Europe and speci- 

 mens from England and Germany have been examined. American 

 localities represented in material studied by the writer are : 



Cambridge, Mass., October 24 to 30, November 1 (M. C. Z.) ; Vine- 

 land, Ont., August, 1922, W. Robinson; Jordan, Ont., August 15, 

 1916, W. A. Ross (Kans. Univ.) ; two miles west of St. Louis, Mo., 

 April 25, 1904, W. V. Warner (U.S.N.M.) ; Vernon, B. C, September 

 25, 1919, on elm, W. Downes (Ball) ; Vernon, B. C, September 29, 

 1919, on elm, W. Downes (McAtee) ; Victoria, B. C, August 12, 1920, 

 on elm, W. Downes (Downes, Kans. Univ.) ; Mount View, Calif., 

 Ehrhorn (Ball). 



TYPHLOCYBA TENERRIMA Hcrrich-SchaefiFer 



Typhlocyha tcnerrima IIerricii-Sciiaeffer, G. A. W. in the continuation 

 of Panzer, G. W. F., Faunae Insectorum Germanicae Oder Deutschlanda 

 Insecten, 124, 10a, 1G4, 16, 1834 [Germany]. This reference not veri- 

 fied. 



Typhlocyha ruhl Hakdy, James, Descriptions of some new British Homop- 

 terous Insects, Trans. Tynoside Nat. Field Club, vol. 1 (1846-1850) 

 1850, pp. 417-418 [Great Britain]. 



