1917.] NATURAL SCIENCES OF PHILADELPHIA. 259- 



other species of the genus, while the male cerci are distinctive in 

 form. The male supra-anal and subgenital plates are much as in 

 P. histrigata. The tegmina are more elongate but nearly as broad 

 as in P. palmeri and P. dumicola. 



Type: cf ; Victoria, Tamaulipas, Mexico. (0. W. Barrett.) 

 [Hebard Collection Type No. 436.] 



Size and form medium for the group, much as in histrigata. Surface 

 generally smooth, supplied with microscopic hairs, these particularly 

 numerous on the caudal tibise. Head with interocular space very 

 narrow, hardly more than half as wide as proximal antennal joint, 

 narrow" sulcus of vertex distinct, vertex not decidedly produced, 

 declivent; fastigio-facial angle rounded, rectangulate; face distinctly 

 and evenly retreating; frontal costa broadly sulcate, a little the 

 widest between antennal sockets, lateral margins more acute there, 

 below becoming less distinct and parallel; supplementary facial 

 carinse distinct, diverging slightly ventrad. Eyes protuberant, 

 their dorsal surfaces slightly above the plane of the occiput, eyes 

 distinctly longer than gense. Antennae filiform, slightly over twice 

 as long as pronotum. 



Pronotum without lateral carinse; dorsum scarcely expanchng 

 caudad, mecUo-longitudinal carina subobsolete, transverse sulci weak, 

 the two on the prozona weaker and broken mesad, surface micro- 

 scopically roughened on prozona, minutely punctulate on metazona, 

 caudal margin broadly and feebly concave; lateral lobes of pronotum 

 with cephalic margin feebly concave dorsad, feebly convex ventrad, 

 ventral angles rounded obtuse-angulate, the ventro-caudal angles 

 of greater degree, caudal margin moderately oblique, faintly concave.. 

 Tegmina lateral, elongate ovate, nearly two and one-half times as 

 long as broad; apex bluntly rounded, the convexit}^ strongest ventro- 

 caudad; veins distinct, mainly longitudinal. Prosternal process well 

 developed, acute conical, not deflected caudad. Mesosternal space 

 distinctly longer than wide. Metasternal lobes narrowly separated. 



Furcula subobsolete, represented 

 by minute, bluntly obtuse-angulate 

 projections of the segment. Supra- 

 anal plate very broadly shield- 

 shaped, simple. Cerci rather broad, 

 narrowing gradually in proximal 

 half, then subequal in width to 



base of distal portion; dorsal margin ^^S- 2.—Ph(Bdrotettix lit us new 

 , , ,, species. Lateral outline of cercus. 



evenly and weakly concave to acute Type. (Greatly enlarged.) 



