1908. 



NATURAL SCIENCES OP PHILADELPHIA. 



379 



The records of this species show its main range to be over the lower 

 part of the Colorado Valley and adjacent Salton Basin, while the occur- 

 rence of it at San Bernardino Ranch, Cochise County, in southeastern 

 Arizona, in all probability, is due to the species following up the Yaqui 

 Valley from the Gulf of California section of ^lexico. 



HORESIDOTES Scudder. 

 Horesidotes papagensis n. sp. 



Type : 9 ; Sonora Road Canyon, Tucson Mountains, Pima County, 

 Arizona, altitude about 3,000 feet, July 25, 1907. Hebard and 

 Rehn. 



Closely ahied to H. cinereus Scudder, with topotypes of which it has 

 been compared, but differing in the somewhat smaller size, blunter 

 fastigium, greater interspace between the eyes, less apparent lateral 

 foveolse, quite distinct and continuous intercalary vein and more 



-Horesidotes papagensis n 



Lateral view of type. 



robust and inflated and proportionately somewhat shorter caudal 

 femora. 



Size moderate; form distinctly compressed. Head slightly shorter 

 than the dorsal length of the pronotum, ascending on the occiput to the 

 vertex which is interocular, fastigium well rounded into the facial out- 

 line; interocular region subequal to the width of the fastigium, the 

 occiput and interocular region with a weak median and pair of closely 

 placed supplementary carinae; fastigium slightly broader than long. 



