504 Annals of the Carnegie Museum. 



cheeks below them, their anterior margin straight, separated at the 

 vertex by a space a trifle wider than the diameter of the basal antennal 

 joint; fastigium of the vertex depressed, five-sided, shallowly sulcate 

 and gently confluent with the sulcation of the frontal costa, which 

 latter is fairly prominent and of nearly equal width throughout, 

 continuous to the clypeus; facial carina? strong, straight, a little 

 divergent below. Antenna? slender, filiform, a trifle longer than the 

 head and pronotum together. Pronotum very similar to that of 

 steinbachi, but with the hind lobe relatively longer and with the hind 

 margin very broadly and roundly emarginate instead of squarely 

 truncate. Tegmina minute, lateral, spatulate, their tips gently sur- 

 passing the hind margin of the first abdominal segment. Abdomen 

 about normal. Hind femora robust, gross, their tips reaching the 

 apex of the abdomen. Hind tibia? eight-spined externally, the lateral 

 edges normal. Prosternal spine of fair size, pyramidal, the apex 

 moderately acute, and gently directed to the front. Interspace 

 between the mesosternal lobes wider than long, nearly equalling the 

 lobes. Valves of the ovipositor not especially slender, nor yet robust, 

 the apices quite strongly hooked and sharp. 



General color as described above. Sides of the basal abdominal 

 segments prominently marked with shiny black. Hind femora very 

 faintly showing traces of dusky bands on upper margin; lunules of 

 the genicular portion and sides of the basal portion of the hind tibiae 

 black. Lower face and sides of the pronotum faintly pallid. Lower 

 surface a little more pallid than the remainder of the insect. 



Length of body, 9 , 27 mm., of pronotum, 5 mm., of tegmina, 

 4.5 mm., of hind femora, 15 mm. 



Habitat. — The type, together with another female, and a nymph 

 were taken at Santa Cruz de la Sierra, Bolivia, at an elevation of 

 450 meters. They were collected by J. Steinbach. 



Genus Osmilia Stal. 



Osmilia Stal, Recens. Orthopt., I, p. 68 (1873); Brunner, Ann. Mus. Genova, 

 XXXIII, p. 147 (1893); Bruner, Biol. Cent.-Amer. Orthopt., II, pp. 222, 330 

 (1907-1908). 



The various species of which the present genus is composed belong 

 to tropical America. Nine species are recognized in Kirby's Synony- 

 mic Catalogue of Orthoptera. It might be stated here that these 

 insects are so very similar in their general appearance and even in 



