ART. 18 JASSID GENUS TYPHLOCYBA McATEE 13 



projecting triangular process (fig. 24). Outer claspers gradually 

 narrowed for about two-thirds of their length, then more abruptly, 

 the apices spatulate and slightly divaricate. Inner claspers some- 

 what as in T. commissuraUs^ aedeagus also similar to the same organ 

 of that species, rather more slender, however, and with the pairs of 

 apical appendages more contrasted in length (figs. 29-30). 



Female. — Coloration as in male; vertex in the single specimen at 

 hand longer than in male and more nearly angulate than usual in 

 the genus. Eighth sternite, very slightly emarginate medially, 

 decidedly so laterally, sides projecting about as far posteriorly as 

 center of liind margin (fig. 109). 



Length, 3-3.5 mm. 



Holotype. — Two other males, and allotype female, Soldier, Utah, 

 August 13, 1906 (Ball). 



TYPHLOCYBA ARISTE. new species 



Male. — Head and thorax pale greenish yellow ; tegmina hyaline, 

 slightly washed with greenish yellow, apical cells hyaline; lower 

 parts pale yellowish. Hypopygium : 9th segment as in T. comrtvls- 

 snralis (fig. 25) except that the lower posterior angle is produced 

 downward in a flap-like lobe. Claspers and aedeagus as in T. 

 euphrante (figs. 29-30). 



Length, 3.25 mm. 



Holotype. — Pecos, N. M., September 1, on Rihes, T. D. A. Cock- 

 erell. (Ball). 



TYPHLOCYBA ROSAE Linnaeus 



Cicada rosae Linnaeus, C, Systema naturae, ed. 10, 1758 (Engelmanu Re- 

 print, 1894), p. 439 [Sweden?]. 



Cicada rosae Linnaeus, C, Fauna Suecica, 1761, Species 902, p. 244 

 [Sweden]. 



TypJilocyba pferidis Daiilbom, A. G., Anteckningar ofver Insekter, som 

 l.lifvit observade pa Gottland ocli i en del af Calmare Liin, under sommaren 

 IS.W, Kgl. Vet.-Akad. Ilandl. (1850) 1851, pp. 179-181 [Gottland]. 



TypJilocyba lactea Douglas, J. W., Notes on British Homoptera, with descrip- 

 tions of new species, Ent. Mo. Mag., vol. 12, September, 1875, p. 77 [Great 

 Britain]. 



Male. — General color stramineous, both above and below, some- 

 times with a yellowish wash on sectors and about front of head. 

 The species is described by Edwards '° as chiefly whitish, and with 

 faint dusl^ spots anterior to crossveins. The latter markings have 

 not been present on any specimen seen by the present writer. 

 Hypopygium: Upper angle of 9th segment slightly produced in a 

 short downwardly and inwardly projecting pro(,css, below which 

 the posterior margin of segment is slightly emarginate (fig. 32). 



'"Homoptera British Islands, IS'Jfi, p. 210. 



