REHN AND HEBARD 123- 



the pronotal disk, the greatest width about two-thirds of the length, free 

 margin at the apex of the stridulating vein briefly acute-produced, the imme- 

 diate angle of the production rounded, margin distad of the projection 

 sinuate, stridulating vein almost horizontal, arcuate, not at all heavy, anal 

 vein strongly arcuate; discoidal vein with three rami. Exposed portion 

 of the wings in length surpassing the tegmina by about twice the pro- 

 notal length. Abdomen with the proximo-dorsal segment bearing a high, 

 somewhat recurved process, the apex of which is rounded and sub-bulbous, 

 the caudal face of the process deeply folded; disto-dorsal abdominal seg- 

 ment sub-arcuate emarginate mesad; supra-anal plate with its distal margin 

 subtruncate; cerci moderately elongate, robust, the distal fourth subrec- 

 tangularly inbent, acute, the whole slightly and the extremity decidedly 

 depressed, the internal margin of the cercus with a slight ridge; subgenital 

 plate broad, moderately elongate, the distal margin deeply arcuato-emar- 

 ginate, brief but rather robust styliform processes present laterad. Femora 

 with the apices non-produced dorsad; cephalic and median femora with 

 bispinose genicular lobes and caudal pair with vmispinose lobes. Cephalic 

 femora about twice the length of the pronotal disk; cephalic tibiae with 

 elliptical foramina. Median femora about half again as long as the cephalic 

 femora. Caudal femora subequal to the tegmina in length, moderately 

 inflated proximad ; catidal tibiae surpassing the femora by about the length 

 of the pronotal disk. 



Description of Female.— For the female sex we describe one from Tucson, 

 Arizona, October 12, 1910, (Rehn and Hebard), [Hebard Collection]. 



The characters here given are those of difference from the description 

 of the male sex. Fastigium narrower and more compressed than in the male 

 sex.'O Pronotum with the caudal margin of the disk obtuse-angulate with 

 the immediate angle narrowly acute ; calloused area along the caudal margin 

 of the lateral lobes less inflated than in the male. Proximo-dorsal abdomi- 

 nal segment without a trace of a dorsal process; disto-dorsal abdominal seg- 

 ment with a transverse median impressed area, the cephalic margin of which 

 is arcuate, distal margin of segment subtruncate but slightly arcuato-emar- 

 ginate at the bases of the cerci; supra-anal plate semi-elliptical, having a 

 medio-longitudinal sulcus proximad; cerci moderately elongate, tapering; 

 ovipositor moderately deep, slightly longer than the pronotal disk, moderate- 

 ly arcuate and appreciably narrowing distad, the immediate apices of the 

 valves blunted, dorsal and ventral margins for half of their length serrato- 

 dentate, the teeth of the ventral margin recurved, surface of distal third 

 of dorsal valves with decided spiniform tubercles rather irregularly ar- 

 ranged in sub-linear series, the ventral row the most regular, ventral valves 

 with a similar decided series bordering the sulcus, elsewhere on distal half 

 with scattered rugose tuberculations; subgenital plate short, trigonal, apex 

 blunted. Cephalic femora slightly more than twice the length of the pro- 

 notal disk; median femora about three times as long as the pronotal disk; 

 caudal femora slightly longer than the tegmina. 



'"> This is probably as wide in New Mexican females as in the males, but 

 unfortunately none are available for study. 



TRANS. AM. ENT. SOC, XL. 



