Shorl-hovned Grasshoppers from East Africa. (j77 



2. Tristria c(erulei})os^ ;-p. u. 



S . Slender. Anteiiii<e not reaching- to the hind margin 

 of the pronotum. Frontal ridge in profile slightly convex. ; 

 its surface flat, only at the fastigiuni feebly convex, with 

 scattered pnnoturation ; the margins not raised, very feebly 

 approximated at the fastigiinn. Lateral facial keels obtus- 

 angulately broken in the middle. Vertex feebly impressed, 

 rngulose, tricarinnlato. the lateral keels disap[)earing behind 

 the eyes and the middle one reaching the pronotum. Eyes 

 narrowly oval, very oblique, with the lower margin rounded ; 

 distance between them less than their horizontal diameter. 

 Pronotum indistinctly rugosely punctured ; metazona about 

 two-thirds of the prozona, longitudinally rugulose ; median 

 keel very distinct, thick, smooth ; transverse sulci feeble ; 

 lateral keels distinct in prozona and subobliterate in the 

 hind part of metazona ; lateral lobes about half again as 

 long as high; their upper third is smooth, minutely punc- 

 tured and separated from the lower part, which is more 

 densely punctured, by a subcallose longitudinal carinula ; 

 lower margin callous, obtusely angulate just behind the 

 middle. Mesosternal suture long. Pleur;© rugosely punc- 

 tured. Elytra not reaching the hind knees. Hind femora 

 slender. Hind tibiae with 12-13 spines on each side. First 

 joint of the hind tarsi twice as long as tlie second; third one 

 half as long again as the second. Cerci elongate, conical, 

 slightly longer than tlie supra-anal plate. Subgenital plate 

 long, pointed. 



General coloration testaceous. Antennae pale basally, 

 somewhat reddish elsewhere. Face, frontal ridge, vertex, 

 and occiput punctured with black j sides of the frontal ridge 

 above the antennae and of the fastigium black ; an indefinite 

 blackish-castaneous fascia runs along the vertex and occiput ; 

 a chocolate-brown postocular fascia marginated from below 

 with a narrow pale line is prolonged on the lateral lobes of 

 the pronotum, where it occupies the upper third, the pale 

 line becoming there somewhat callous, but not reaching the 

 hind margin ; the lower callous margin of the lobes pale, 

 with an irregular, narrow, reddish-brown fascia separating it 

 from the upper part ; the disc of the pronotum with blackish 

 and brown puncturation, with a pair of round black dots in 

 the middle of the prozona, and another pair between the first 

 and second sulci. Elytra with the pre-radial part paler than 

 the rest ; the radial veins in the basal half black ; other veins 

 brownish with darker streaks; anal area with a few scarcely 

 distinct darker spots. Fro)it and middle legs testaceous, 



