50 Annals of the Carnegie Museum. 



These individuals have the general aspect of some of the females 

 of the Cayenne specimens which I am describing in the present paper 

 as Stenacris cayennensis. I observe, however, that these specimens 

 from the Uassa swamp have paler wings than do those coming from 

 Cajenne. 



95. Stenacris cayennensis sp. no v. 



A comparatively small, slender insect, related to the species minor 

 and viarschalli of Bruner, as described in the Biologia Centrali- 

 Americana, Orthoptera, Vol. II, pp. 256 and 257, but closer to the 

 latter than the former. In the present characterization comparisons 

 therefore will be made with the descriptions of those species. 



General color somewhat variable, owing to the variation in the 

 amount of dusky markings present in different individuals. Head 

 moderately large, a little wider than the anterior edge of the 

 pronotum; eyes large and prominent, separated above by a space 

 very little wider (cT) or fully twice (9 ) that of the diameter of the 

 basal antennal joint; the fastigium depressed, horizontal, a little 

 shorter than its basal width, the width broadly convex, and showing 

 only a faint indication of sulcation near its anterior edge, the lateral 

 edges very gently bowed and faintly carinated, this most apparent in 

 the males. Front rather strongly retreating, viewed laterally gently 

 bowed inwards at middle, owing to the prominence of the frontal 

 costa between the antennae, the latter moderately well defined, the 

 lateral walls heavy and bisinuate, giving the costa two wider portions, 

 viz., one above between the antennae, and the other at the median 

 ocellus, continuous to the clypeus, roundly and deeply sulcate through- 

 out; lateral or facial carinae slender, straight, divergent, extending 

 from the lateral ocelli to the outer facial angles at the base of the 

 clypeus. Antennae of moderate length, nearly (9) or quite (cf) 

 reaching the posterior margin of the pronotum, almost linear, only 

 the three or four basal joints slightly depressed. Pronotum sub- 

 cylindrical, considerably longer than wide, the middle a little arcuate 

 or strangulate by having the base and apex slightly wider than at 

 middle, the surface finely punctulate, the transverse furrows well 

 marked; front and hind borders broadly rounded. Tegmina fully 

 developed, extending beyond the tip of the abdomen in both sexes, 

 their apex subacuminate. Hind femora normal, not reaching the 

 apex of the abdomen in either sex; the tibiae not markedly expanded 



