88 ORTHOPTEROUS GROUP INSARAE 



length less than depth, much deeper caudad than cephalad, the ventro-ce- 

 phalic angle very broadly obtuse and rounded, the ventro-caudal angle sub- 

 rectangulate and broadly rounded, humeral sinus distinct but not as deep 

 as in elegans, sub-rectangulate and rather broadly rounded ; a striking and 

 much elevated callosity occupies the caudal portion of the lateral lobes, this 

 callosity extending from a point on the ventral margin a little cephalad of 

 the deepest portion of the humeral sinus to the humeral sinus and bounded 

 on the inside by a nearly straight line between these points; over the re- 

 maining portion of their surface the lateral lobes are rather deeply excavate. 

 Tegmina very similar to those of elegans except that the marginal field 

 narrows very abruptly and disappears beyond the proximal third. Disto- 

 dorsal segment of abdomen showing a shallow depressed area, in cross sec- 

 tion the lateral margins are formed by distinct angles, the margins of the 

 depression are arcuate-convergent cephalad; supra-anal plate as in elegans; 

 cerci of same type as in elegans but less decidedly and more evenly incurved 

 throughout their length; subgenital plate short, narrowing caudad, more 

 narrow than in elegans, the lateral margins convergent distad and pro- 

 duced in non-articulate styliform appendages, cephalad from the base of 

 these appendages extend rounded elevations which are sub-parallel for a 

 distance equal to the distance between the appendages, then slightly diver- 

 gent without angulation and becoming obsolete about the middle of the 

 plate, distal extremity of plate between the produced lateral margins 

 obtuse-angulate, produced slightly more than the styliform appendages, 

 the sides of this angulation slightly concave. ^^ Cephalic and median limbs 

 shorter and somewhat more slender than in elegans; the cephalic femora 

 carinate dorso-distad for a very short distance with the distal margin of tlie 

 same noticeably and very sharply produced, genicular lobes long, dentiform, 

 bearing a small supplementary spine on the ventral margin; cephalic and 

 median tibiae much as in elegans though shorter and somewhat more slender. 

 Caudal femora shorter than the tegmina by the length of the median femur, 

 when compared with those of elegans they are found to be very much shorter, 

 more bullate for somewhat more than proximal half but in the remaining 

 distal portions somewhat more slender than in that species. 



A female, bearing the same data as the type, is the Allotype. 



Description of Allotype. — Size larger than male, form somewhat more 

 attenuate than in that sex, very similar in general appearance. The mar- 

 ginal field of the tegmina narrows not quite so abruptly in this sex, which 

 condition is also true in the female sex of elegans. Ovipositor and sub- 

 genital plate similar to elegans. 



In addition to the Type and Allotype the following series may be 

 considered paratypic : 



Tucson, Arizona; October 2, 1910, (R. & H.), 2 c?. 



^^ In the scries of males of the present species before us, the caudal margin 

 of the subgenital plate is variable inform, but the non-styliform appendages 

 are almost always very short knob-like protuberances and the angulation 

 between always extends as far or farther caudad than these. 



