ART. 18 JASSID GENUS TYPHLOCYBA McATEE 33 



TYPHLOCYBA NITIDULA Fabricius 



Cicada nitidula Fabricius, J. C, Systema Rhyngotoriim secuntlum 

 ordines, geuera, species, adiectis sysonymis, locis, observationibus, de- 

 scriptionibiis, 1803, p. 79 [Paris. France]. 



" Pale yellow ; the scutellum, a broad band across the base of the 

 elytra, and another across the apex of corium, blackish brown. Mem- 

 brane whitish hyaline. Claws fucoiis." The variety rwrgueti 

 Lethierry, has the space between the two bands on the elytra tilled 

 up with blackish brown. 



Length, 3.3-3.6 mm. 



James Edwards, from whose work on the Homoptera of the Brit- 

 ish Island (1896, p. 219), the above description is quoted, has kindly 

 supplied me with a male T. nitidula, var. norgueti which has enabled 

 me to present the following details relating to the Hypopgium : Up- 

 per posterior angle of 9th segment rather produced, subangulate, and 

 incurved, the lower receding, the surface of the segment in general 

 well-haired; outer claspers narrowing gradually, to the bluntly 

 rounded apices, inner claspers of ordinary form, the apices out- 

 curved and acute ; aedeagus with a very short base from which arise 

 at almost right angles, two straight, tapering, moderately pointed 

 processes, above which there is an unpaired, shorter, upcurved proc- 

 esses, giving a '" two-^^toried " aedeagus, a type seen in only one 

 other species, T. modesta Gibson (figs. 71-72). 



The eighth steriiite of females from England in Baker Collection 

 is almost evenly convex posteriorly. 



Distribution: Typhlocyha nituduJa ranges from Russia over north- 

 ern and central Europe. It has been recorded " from Mount Wash- 

 ington, N. H., by Mrs. Annie Trumbull Slosson. In the present 

 study no specimen of the true nitidida has been found, and it is sug- 

 gested that the Slosson record may be based on one of the varieties 

 of T. giUettei or T. cyinba. 



TYPHLOCYBA MODESTA Gibson 



Typlilocyha modesta Gibson, E. H.. Tbree new species of Jassoidea from 

 Missouri, Can. F>nt., vol. 49, no. 5, May, 1917, p. 1S4 [Charleston, Mo.]. 



jl^Jale. — Head, thorax, and underparts stramineous, tegmina nearly 

 hyaline, faintly dusky apically. Hypopygium with the side of the 

 ninth segment strongly produced in a lobe which is provided with 

 a projecting tooth both above and below, the upper the longer, and 

 more curved and acute (fig. 73), sometimes pigmented; outer clasper 

 narrowed on apical third, the apex slightly spatulate and heavily 



" Additional list of insects tal^en in Alpine region of Mount Wasiiington, Ent. News, 

 vol. 17, No. 9, November, 1006, p. 326. 



