64 



ORTHOPTEROUS GROUP INSARAE 



caudal margin arcuate, the humeral sinus rather deep, roundly acute-angu- 

 late. Tegmina long and very broad, distal width svibequal to mesal width, 

 the tegmina reaching considerably beyond the distal extremities of the cau- 

 dal femora and obliquely truncate at apex with angles somewhat narrowly 

 rounded; marginal field of tegmina very broad for nearly half the tegminal 

 length, narrowing gently distad from the point of greatest width which is 

 proximad. Disto-dorsal segment of abdomen with greater part occupied by 

 a subdepressed area, in shape hexagonal with angles somewhat rounded; 

 supra-anal plate rather long, rather broadly trigonal, with lateral margins 

 somewhat convex; cerci long for the group, crassate, gently and regularly 

 incurved, tapering evenly and sharply to apex which is considerably flat- 

 tened above and armed with a rather long tooth, the end of which is 

 hooked inward, this tooth directed dorsad at an obtuse angle; subgenital 

 plate short, lateral margins convergent distad, distal extremity broadly and 

 roundly emarginate, bearing laterad slender and very short articulate styles, 

 while cephalad from the base of the styles extend slightly divergent rounded 

 elevations which become obsolete about the middle of the plate. Ceph- 

 alic and median limbs slender, the cephalic femora carinate dorso- 

 distad for a very short distance with distal margin of the same bluntly 

 acute-angulate, genicular lobes triangular, dentiform; cephalic tibiae with 

 proximal extremity greatly swollen, narrowing sharply below the tympa- 

 num which organ is apert, median tibiae slightly expanding proximad. 

 Caudal femora shorter than the tegmina by about the length of one of the 

 cephalic femora, the proximal half mildly buUate, genicular lobes triangular, 

 dentiform, with blunt apex. 



9 ; Tepic, Mexico. (Dried alcoholic.) [Hebard Collection.] 

 Description of Female. — Very much like male in size and general appear- 

 ance. Ovipositor considerably less than cephalic femur in length, broad, 

 bent sharply upward at base, the bent portion shorter than in tolteca, the 

 distal half of the dorsal margin, and distal extremity only of the ventral 

 margin, finely serrate; subgenital plate short, triangular, with narrow apex 

 broadly rounded, the plate is sulcate meso-proximad and can scarcely be 

 said to embrace the base of the ovipositor. 



Measurements {in millimeters) 



