60 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



Zoology which may belong here (as the cerci indicate), but the tegmina 

 are longer than in the specimens described above and the whole appear- 

 ance and the proportions are those of H.festirus. 



Besides the colorational features which distinguish this species from 

 H. viridis, the body is relatively stouter, the antennae coarser and 

 shorter in proportion to the prouotum, the latter is more acutely angu- 

 late behind (though the difference is but slight), the hind femora are 

 shorter and stouter, and the tegmina and wings relatively shorter. 



3. HESPEROTETTIX FESTIVUS, new species. 

 (Plate IV, fig. 10.) 



Hesperotettix viridis SCUDDER!, Bull. U. S. Geol. Surv. Terr., II (1876), p. 262. 

 THOMAS, Proc. Dav. Acad. Sc., I (1876), p. 262. SCUDDER!, Rep. U. S. Eut. 

 Coram., II (1881), App., p. 24. BRUNEH (pars), ibid., Ill (1883), p. 59. 



Face varying from green-yellow to pallid yellow, more or less deeply 

 infuscated in the intercostal space below the antennae, the frontal costa 

 sulcate throughout excepting above, and faintly and distantly punctate 

 with fuscous on the margins; genae pallid or greenish pallid except for 

 a short, slender, oblique, blackish stripe below the eye. Summit of 

 head and dorsum of pronotum buff, greenish buff", rarely green, or oliva- 

 ceous, with a median, black-margined, white or pallid stripe, the stripe 

 reduced to a thread on the head, the black edging remaining; on the 

 sides, above the middle, is a more or less irregular black stripe, more 

 interrupted or broken in the female than in the male, extending from 

 behind the eyes, where it is reduced to parallel longitudinal streaks, to 

 the hinder edge of the prozona, bordered broadly below and above with 

 pallid, above forming a stripe which begins narrowly along the upper 

 edge of the eyes and continues also across the metazona, occupying 

 the position of lateral carinae; excepting for stripes at the median 

 and lateral carinae, the metazona is uniformly buff or rarely green 

 and is very shallowly punctate ; both meso- and metapleura with an 

 oblique, fusiform, pallid stripe, margined more broadly in some places 

 than in others with black. Tegmina of about the length of the abdo- 

 men, rather dark bluish green, the anal area more or less deeply tinged 

 with buff, the discoidal and posterior ulnar veins white, the veinlets 

 impinging on the apical margin distinctly blackish. Fore and middle 

 femora buff, inclining to ferruginous; hind femora buff, but purplish on 

 the outer face and more or less iufuscated, the geniculation with a 

 blackish crescent on the outer and inner sides; hind tibiae bluish green, 

 becoming more or less pallid or testaceous distally, the spines white 

 with black tips, the tarsi testaceous or greenish testaceous. Snpraanal 

 plate of male triangular, of about equal length and breadth, broadly 

 rounded apically, with straight and slightly upturned margins, the sur- 

 face with a pair of converging stout elevated ridges, forming a basal 

 triangular pit between them, and in the distal half of the plate beyond 

 the united ridges a slight median sulcus; furcula consisting of a pair 



