REHN: SANTA RITA ORTHOPTERA. 301 



sternum with a median compressed protuberance ; mesosternal 

 lobes contiguous. Supra-anal plate aculeate in both sexes ; sub- 

 genital plate of male strongly produced, knife-like. 

 Type: P. snowi, n. sp. 



Prorocorypha snowi n. sp. (Plate 63.) 



Types : ^ and 5 (not mature) ; Santa Rita mountains, 

 Pima and Santa Cruz counties, Arizona, 5000 to 8000 feet, June 

 i ^), July ( 2 ), 1907. F. H. Snow. (University of Kansas.) 

 Size medium; form very elongate. Head one and one-half 

 times the dorsal length of the pronotum, occiput with a hardly 

 perceptible longitudinal arcuation ; interocular region but little 

 narrower than the greatest width of the fastigium; rostrum 

 very long and deep, occupying nearly half the length of the 

 head and the greater part of the depth ; outline when seen from 

 the side with fastigium slightly ascending from the interocular 

 region, face nearly horizontal, inter-antennal portion rounded 

 to the acute angulate fronto-fastigial angle ; fastigium lanceo- 

 late, the greatest width contained twice ( ^j ) or more than 

 twice ( $ ) in the length, apex very narrowly rounded, lat- 

 eral margins distinctly carinate, surface tectate, median 

 carina as distinct as the lateral and extending to the 

 inter-antennal region; lateral foveolse very elongate, lanceo- 

 late; frontal costa. narrow, very slightly but regularly 

 expanding ventrad in the male, very narrow dorsad, expanding 

 somewhat in the inter-antennal region and subequal ventrad in 

 the female, in both sexes moderately sulcate and becoming ob- 

 solete before reaching the clypeal margin ; eyes flattened, 

 elongate ovate, not at all prominent; antennae, in the male at 

 least, slightly exceeding the head and entire thorax in length, 

 thick, three-sided, one narrower than the others, ensiform. 

 Pronotum about twice as long as its width, cephalic margin of 

 dorsum truncato-rotundate, caudal margin truncate, median 

 carina distinct ; lateral lobes with the ventral margin truncate. 

 Wings and tegmina undeveloped. Prosternum with a very dis- 

 tinct longitudinal rounded tubercle ; mesosternal foramina con- 

 siderably impressed. Abdomen with the segments considerably 

 elongate; supra-anal plate in both sexes strongly produced, 

 needle-like, its length being but very slightly less than the 

 dorsal length of the pronotum; cerci somewhat compressed, 

 simple, sub-sty] if orm; subgenital plate of male produced into 

 a compressed, slightly arcuate knife-like structure, slightly 

 more than half again as long as the supra-anal plate; ovi- 



