64 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



rounded lobes, separated by half their own diameter ; cerci a little 

 shorter than the supraaual plate, simple, conical, but slightly more 

 rapidly tapering on basal than on apical half, bluntly acuminate; infra- 

 cereal plates broad triangular, scarcely shorter than the supraanal plate, 

 slightly ridged on its margins; last dorsal segment deeply emargimite, 

 so as to be less than half as broad in the middle as at the sides. 



Length of body, male, 16 mm., female, 2 mm.; antennae, male, 7.25 

 mm., female, 8 mm.; tegmina, male, 10.25 rum., female, 10 mm.; hind 

 femora, male, 11 mm., female, 12.5 mm. 



Ten males, 10 females. Wellesley, Norfolk County, Massachusetts, 

 July IG-August 1 (A. P. Morse); New Jersey (U.S.N.M. [Xo. 711]); 

 Georgia, Morrison . 



This species has been previously recorded only from New Jersey 

 (Thomas, Uhler), where Uhler says it is "not uncommon in the cran- 

 berry fields of Atlantic County; 77 and from Wellesley, Massachusetts, 

 by Morse, who tells me that his specimens were taken in a very 

 restricted locality, "a steep gravelly hillside, forming the terminal por- 

 tion of a part of the gravel-plain formation of Wellesley," where they 

 were captured u by sweeping vigorously the short-tufted growth of 

 bunch grass, Andropogon scoparius, which with other wild grasses and 

 running blackberry vines sparsely clothed the gravelly soil." All his 

 specimens were taken between mid July and mid August. Since writ- 

 ing me this, Mr. Morse has found another locality near the previous, 

 where on July 10 he took both sexes mature and nymphs ; the surround- 

 ings were similar. 



This species is very closely allied to H. pratensis, but differs from it 

 in its shorter tegmina and wings, the more regularly conical cerci of 

 the male, the slightly different form of the supraaual plate and the 

 markings ; it is also of a smaller size. 



7. HESPEROTETTIX PRATENSIS, new species. 

 (Plate V, fig. 3.) 



Ommatolampis riridls THOMAS (pars), Rep. U. S. Geol. Surv. Terr., V (1873), p. 156. 

 Hespero.ettlx riridis UHLER (pars), Bull. U. S. Geol. Surv. Terr., Ill (1877), p. 



795. BRUNER (pars), Rep. U. S. Ent. Coirira., Ill (1883), p. 59; Rep. U. S. 



Ent., 1885 (1886) p. 307. 



Head yellowish green, sparsely punctate with fuscous in front, the 

 lower portion of the face more or less obscured with purplish, a short 

 fuscous stripe depending from the eye, in front of which the callosity is 

 livid; vertex with a more or less distinct, rather narrow, fuscous or 

 blackish stripe, narrowing anteriorly, and ordinarily with a median 

 thread of yellow, the fastigium generally discolored, sometimes and 

 especially in the female reddish. Pronotum scarcely (male) or slightly 

 (female) increasing in breadth from in front backward, equally through- 

 out and with no angle in the middle, yellowish green, occasionally, 

 especially in Southern examples and apparently in the female only, 



