76 Annals of the Carnegie Museum. 



Brazil, and is contained in the Carnegie Museum. It was in all 

 probability taken by H. II. Smith. 



Genus Columbacris gen. now 

 Related to Leptysma, Stenacris, Cylindrotettix, and Leptysmina, but 



differing from all of these in the form and comparative size of the 

 fastigium of the vertex and the last ventral segment of the male 

 abdomen. 



Head large, moderately robust, horizontal, the face very oblique, 

 slightly wider than the anterior edge of the cylindrical pronotum, 

 which it equals in length. Vertex between the eyes about as wide 

 as the greatest width of the antennae, the fastigium large, a trifle 

 exceeding the eyes in length, mitriform, the disk but gently silicate 

 on basal half, the front acuminate, the sides gently bowed and carinate. 

 Frontal costa very prominent above, and broadest between the 

 antenna?, profoundly sulcate throughout, continued to the base of 

 the clypeus. Lateral or facial carina? inconspicuous. Eyes promi- 

 nent, very strongly oblique, and likewise divergent posteriorly, elongate- 

 elliptical, as long as the anterior edge of the cheeks below them. 

 Lateral ocelli large, situated on the lateral carinse of the fastigium just 

 opposite the insertion of the basal joint of the antenna?. The latter 

 arising from a rather deep scrobe plainly in advance of the upper 

 anterior extremity of the eyes. Pronotum cylindrical, rather closely 

 and minutely punctate, most closely so on the posterior lobe and near 

 the anterior border; second and third transverse sulci continuous, 

 plain, the first rather faint and present only on the disk; front and 

 hind margins rounded, the posterior about one-half as long as the 

 anterior lobe. Lower lateral edges of pronotum straight on posterior 

 half, oblique on anterior half. Tegmina of medium width, elongate- 

 lanceolate, a little surpassing the apex of the abdomen. Wings long, 

 narrow, apex of anterior field acuminate, the veins heavier and green- 

 ish, the radial field vitreous, delicate, and with more or less dusky 

 veins. Hind femora rather robust and elongate for the group, the 

 apex not quite reaching the base of the supra-anal plate; hind tibia? 

 st rough- dilated apically, the margins sharply laminate, seven to 

 eight-spined externally and twelve to thirteen-spined internally. 

 Mesosternal lobes contiguous for about one-half their length. Pro- 

 sternal spine heavy, enlarged, and bent to the rear on apical half, 

 strongly hirsute. Supra-anal plate rather broad on basal half, with 



