1909.] NATURAL SCIENCES OF PHILADELPHIA. 135 



A single male was taken in dry grass at Aden, July 21, while at Albu- 

 querque, September 14, a series of thirteen females was taken in dry 

 grass and on cultivated ground, chiefly on the latter. In size there is 

 a slight amount of variation, but not enough to cause any difficulty 

 in recognizing the species. An average pair measure as follows : 



El Paso- Albuquerque. 

 Length of body, . 

 Length of head, . 

 Length of pronotum, 

 Length of tegmen, 

 Length of caudal femur, 



In coloration the species appears to be quite uniform, although the 

 Albuquerque series is darker than the individuals from the El Pasan 

 region, all examined being in a buff and brown phase except one Albu- 

 querque specimen which demonstrates the existence of a green phase. 



The comparatively robust build of the species, particularly of the 

 females, will readily serve to differentiate it from its allies. 



The only positive records for the species aside from those given here 

 are from the vicinity of Mesilla and Las Cruces, Donna Ana County, 

 New Mexico. 



Paropomala acris Rehn and Hebard. 



This species, which was described from Railroad Pass, Cochise County, 

 Arizona, was found to be fairly numerous at Aden, July 21, chiefly 

 in grass prairie land, a series of eight adult and two immature males 

 and two adult and three immature females being taken. A pair 

 was also taken at El Paso: the male, July 11, clinging to a thorn of a 

 mesquite near the edge of the mesa; the female, July 10, on prickly 

 pear (Opuntia sp.) in the greasewood belt at the east base of the 

 Franklin Mountains. 



The El Paso male is of nearly the same size as the type, but all the 

 Aden males are smaller. This difference in specimens from the two 

 localities holds true in the female sex, the two Aden specimens of that 

 sex being uniform in size and both smaller than the El Paso individual. 

 The following measurements may be of interest. 



