1908.] NATURAL SCIENCES OF PHILADELPHIA. 371 



PSEUDOSERMYLE Caudell. 

 Pseudosermyle truncata Caudell. 



Two male specimens of this species taken at Palmerlee, Huachuca 

 Mountains, Cochise County, July 9 and 16, by Mr. H. Kaeber have been 

 examined. The species is now known to range from the Grand Canyon 

 region south at least to the southern boundary of the Territory and west 

 to southern California. The localities from which it has been recorded 

 are Dos Cabezos, Bright Angel, San Bernardino Ranch and the Hua- 

 chuca and Santa Rita Mountains. 



ACRIDID^. 

 PARATETTIX Bolivar. 

 Paratettix toltecus (Saussure). 



At Tucson two females of this species were taken on July 26, and a 

 single female was collected by Hebard at 3876 feet elevation on the 

 Bright Angel Trail, Grand Canyon, September 12. These individuals 

 were taken on damp ground near water. All three specimens have 

 the apex of the pronotum failing to reach the tips of the caudal 

 femora. 



MERMIRIA St&l. 

 Mermiria texana Bruner. 



A female specimen of this species taken at Palmerlee, Huachuca 



Mountains, Cochise County, July 6, by Mr. H. Kaeber has been examined. 



PAROPOMALA Scudder. 

 Paropomala acris n. sp. 



Type : cJ* ; Railroad Pass, Cochise County, Arizona, altitude 4,386 

 feet. July 23, 1907. (Hebard and Rehn.) 



This species differs from the previously known species of the genus 

 in the following particulars : from cylindrica and calamus in the much 

 shorter subgenital plate and longer tegmina; from pallida in the 

 slenderer form and more acute fastigium; from dissimilis and virgata 

 in the more produced head, the more acute fastigium and the more 

 elliptical eyes. 



Size rather small; form elongate, very slender. Head with the 

 dorsum slightly longer than the dorsum of the pronotum, occiput 

 hardly elevated, very shghtly arched, fastigium and interocular region 

 horizontal; interocular region slightly narrower than the greatest 

 width of the fastigium; fastigium longer than broad, distinctly acute- 

 angulate in shape with the immediate apex well rounded, surface of the 

 fastigium with a circular impression covering about two-thirds the 

 circumference of a circle; eye elongate-ovate; angle of face considerably 

 retreating, the interantennal region with the angle less acute and 



