Bruner: Saltatorial Orthoptera. 47 



straight (9), and a little elevated into bounding carina?. Vertex in 

 the male about as wide, in the female one-half wider than the diameter 

 of the basal antennal joint. Antennae sublinear of moderate length, 

 and in nowise hastate, the basal joints alone only faintly depressed. 



Pronotum subcylindrical, very gently and broadly strangulate, 

 finely rugulose and punctate, the transverse sulci fine and little 

 impressed; anterior edge little, but widely and roundly, emarginate 

 at middle; the hind margin of disc subangulate. Tegmina narrow, 

 extending about one-fifth of their length beyond the tip of the abdomen 

 in both sexes, subacuminate. Hind femora normal, somewhat shorter 

 than the abdomen; the hind tibia; slender, but with the lateral margins 

 acute and a little prominent apically, armed externally with from 

 seven to eight spines. Tip of the male abdomen subacuminate, the 

 last ventral segment simple, about one-half longer than its basal 

 width, the outer half iinger-like and directed backwards and upwards, 

 its extreme apex blunt. Supra-anal plate small, its apical half 

 narrowed and extending beyond the strongly curved pale cerci; the 

 edges of the median sulcus and apex of the last abdominal segment 

 on the upper side marked with black. Prosternal spine rather elon- 

 gate, clubbed, and blunt at its apex and somewhat directed to the 

 rear. Anterior and median legs short, small. 



General color of head, pronotum, pleura, and tegmina pale bluish 

 green; the legs and underside paler, inclining to dirty white or test- 

 aceous; the hind tibiae and tarsi coral-red. Antennae testaceo- 

 ferruginous, in the male infuscated apically. Hind femora internally 

 pale piceous, owing to the shining through of the dried muscular tissue. 

 Abdomen pallid, uncolored above. 



Length of body, cf , 29 mm., 9 , 36 mm.; of pronotum, c?',4.8 mm., 

 9, 6.5 mm.; of tegmina, cf, 25 mm., 9, 33 mm.; of hind femora, 

 cf , 13.5 mm., 9 , 16 rtim. 



Two males and a female of this new species from Cayenne. They 

 were taken in February and March, 1917, by S. M. Klages. C. M. 

 Agc. No. 5873. One of the males is made the type of the species. 



Genus Stenacris Walker. 



Stenacris Walker, Cat. Derm. Salt. Brit. Mus., IV, p. 651 (1870); Kirby, Syn. 



Cat. Orth., Ill, p. 413 (1910); Bruner, Annals Carnegie Mus., VIII, p. 479 



(1913)- 

 Armilia Stal, Recens. Orth., I, pp. 42, 85 (1873). 



