422 



PROCEEDINGS OF THE ACADEMY OF 



[Oct. 



Paropomala pallida Bruner. 



This species, which appears to be rather generally distributed over 

 the Mohave, Colorado and Gila Deserts in suitable environments, 

 was taken at Cottonwood, Cima, in the foothills of the Bird 

 Spring Mountains, California and Nevada, at Lyons, Nevada, and 

 Las Vegas, Nevada. At Cottonwood, September 9, seven males and 

 one female were taken from dry vegetation along the wash of the 

 Mohave River, where the species was very plentiful. At Cima, August 

 12, a single female was captured, while in the Bird Spring Mountains 

 and at Lyons, August 11, the species was found in patches of dry 

 high grass growing in deep sand, two males and four females being- 

 taken at the former localit}^ and two females at the latter. Grassy 

 spots in the desert were the haunts of the insect at Las Vegas, where 

 eleven males and five females were taken on August 10. 



In size the males are rather uniform, but the females exhibit a con- 

 siderable amount of geographic and some slight individual variation. 

 Specimens from the localities represented measure as follows : 



a considerable amount of individual variation in size in the female 

 sex, the specimens measured being nearer the maximum size in each 

 lot. 



In color, after allowance is made for green and brownish phases, 

 variation appears to be limited to a lightening of the general shades 

 in some specimens and a general intensification in others. The Cotton- 

 wood and Lyons females are in the greenish phase, but the color is 

 decidedly yellowish with a suppression of the lateral bars, which 

 latter is absolute in all the Bird Spring Mountains females and several 

 from Las Vegas. Three of the Bird Spring Mountains females are 

 uniform gall stone yellow, the other one uniform light green with the 

 tegmina yellowish and antennse brownish. One of the Las Vegas 



