156 ORTHOPTEROUS GROUP INSARAE 



angulate, the surface of the plate impressed, non-sulcate; cerci of the type 

 usual in the genus, the main portion tapering with a low sublamellate ridge 

 on the internal face, distal fourth bent nearly at a right angle, subdepressed, 

 acuminate; subgenital plate moderately elongate, narrowing distad, distal 

 margin deeply truncate-excised between rather long stylif orm lateral append- 

 ages. Femora non-produced distad; genicular lobes of cephalic and median 

 femora bispinose, of caudal femora unispinose. Cephalic femora about two 

 and a half times as long as the pronotal disk; cephalic tibiae with the tym- 

 panum elliptical. Median femora slightly longer than half the tegminal 

 length. Caudal femora twice as long as the median femora, very slender, 

 though appreciably inflated proximad; caudal tibiae surpassing the femora 

 by nearly twice the pronotal length. 



Allotype. — 9 ; Data same as for the type. 



Description of Allotype. — The characters here given are those of differ- 

 ence from the description of the male. Form (for the genus) subrobust. 

 Fasti gium with the margins less elevated than in the male sex, weakly sul- 

 cate; eyes slightly shorter than the infra-ocular portion of the genae. Lat- 

 eral lobes of the pronotum with the greatest depth equal to three-fourths the 

 greatest dorsal length of the same, caudal margin of the lobes slightly more 

 vertical than in the male, humeral sinus shallow, arcuato-emarginate. Teg- 

 mina short, slightly shorter than the median femora, narrow, the distal two- 

 thirds subequal in width, the width at the distal fourth contained nearly 

 seven times in the tegminal length; lobate marginal field decidedly arcuate, 

 in length about one-third that of the entire tegmina; apex well rounded. 

 Wings very slightly surpassing the tips of the tegmina. Disto-dorsal ab- 

 dominal segment sinuato-emarginate at the base of the cerci; supra-anal 

 plate half-elliptical, with a shallow medio-longitudinal sulcus proximad, 

 which is also indicated on the adjacent portion of the disto-dorsal segment; 

 ovipositor half the length of the cephalic femora, not as deep as in most of 

 the species of the genus, the greatest depth half the length, arcuate, dorsal 

 margin serrato-dentate on distal half, ventral margin with recurved serrato- 

 dentations on distal half, these becoming crenulations mesad, surface with 

 the lamellations arranged in sublinear series, longitudinal on the dorsal 

 valves, transverse on the ventral valves, as usual in other species of the 

 genus; subgenital plate short, transverse, subtrigonal, the apex blunt, sub- 

 sinuate. Median femora slightly longer than the tegmina. Caudal tibiae 

 exceeding the femora by slightly more than the length of the pronotal disk. 



Paratypic Series. — We have selected as paratypes four adult 

 males from the type locality and one adult male and two adult 

 females from the Canyon l^ehhid Pulliam Bluff, Chisos Mountains, 

 Texas, a point very close to the type locality. 



