186' PROCEEDINGS OF THE XATIOXAL MUSEUM. VOL.XX. 



Head somewbat prominent, light fusco-olivaceous, with a broad, 

 piceous, postocular band, and above more or less infuscated or dulled 

 in color, often with a pair of longitudinal fuscous stripes; vertex rather 

 tumid, raised considerably above the level of the pronotum, the inter- 

 space between the eyes half as broad again (male) or fully twice as 

 broad (female) as the first anteunal joint; fasti giuni steeply declivent, 

 rather deeply (male) or shallowly (female) sulcate throughout; frontal 

 costa moderately prominent, distinctly failing to reach the clypeus, 

 slightly narrowed above, especially in the male, about as broad as the 

 interspace between the eyes, feebly and broadly sulcate at and below 

 the ocellus, feebly punctate, above biseriately; eyes not very large 

 nor very prominent, not more so in the male than in the female (unus- 

 ual in Melanoplus), slightly shorter than the infraocular portion of the 

 genae ; antennae testaceous, nearly two-thirds as long as the hind femora 

 in both sexes, scarcely relatively shorter in the female than in the male. 

 Pronotum very short, equal on the prozona, expanding somewhat on 

 the metazona, light brownish fuscous, often ferruginous, the lateral 

 lobes with a much broken and maculate postocular piceous or dark 

 fuscous band confined to the prozona, the disk broadly convex, passing 

 into the vertical lateral lobes by a rounded angle forming a blunt 

 shoulder on the metazona and posterior section of the prozona only; 

 median cariua distinct and antero-posteriorly convex on the metazona, 

 feeble and often subobsolete on the prozona; front margin truncate, 

 hind margin feebly obtusangulate, the angle sometimes rounded; pro- 

 zona distinctly transverse, more so in the female than in the male, 

 shorter (particularly in the female) than the finely and very feebly 

 punctate metazona. Prosternal spine rather long, appressed, feebly 

 conical, very blunt, erect, shorter in the female than in the male; inter- 

 space between mesosternal lobes from half as long again to twice as 

 long as broad (male) or quadrate (female). Tegmina exceptionally long, 

 far surpassing the hind femora, not very narrow, subequal, brownish 

 testaceous, heavily flecked with blackish fuscous, usually through the 

 discoidal area but sometimes confined to the middle line; wings ample, 

 hyaline, the veins mostly fuscous, but testaceous next the costal margin. 

 Fore and middle femora only a little tumid in the male; hind femora 

 testaceo-ferruginous clouded with fuscous above, particularly in broad 

 basal, premedian and postmedian patches, the geniculation mostly 

 blackish fuscous, the lower genicular lobe pallid testaceous with a basal 

 blackish bar, the inferior surface, especially externally, flushed with 

 roseate; hind tibiae bright red throughout, the spines black almost to 

 the very base, ten to eleven, rarely twelve, in number in the outer series. 

 Extremity of male abdomen a little clavate, somewhat recurved, the 

 supraanal plate triangular or subhastate, faintly compressed just 

 beyond the middle, the margins feebly elevated on basal half, the apex 

 subacutangulate, the median carinapercurrent and rather deep, bet ween 

 rather high and sharp ridges; furcula consisting of a pair of slight, 

 tapering and acuminate, flattened, more or less divergent spines, about 



