1908.] NATURAL SCIENCES OF PHILADELPHIA. 395 



A single female in the Academy Collection was taken at Phoenix 

 (October 4, 1900; Kunze). 



.ffioloplus arizonensis Scudder. 



In the vicinity of Yuma this species was not uncommon, a series of 

 seven males, fifteen females and one nymph being taken July 27 and 28. 

 Among the high dry weeds on the flood plain of the Gila River fourteen 

 specimens were taken and a number of others seen; one specimen was 

 captured on the summit of a desert hill, one in cultivated alfalfa and 

 seven were taken at night under arc lights. 



There is a perceptible amount of variation in size, the length of the 

 tegmina being quite variable; no specimens, however, having these 

 members shorter than the type measurements, while the greater 

 majority have them much longer. The remarks made under ^Eoloplus 

 tenuipennis regarding color variation apply as well to this species, 

 though the paler specimens have the tegmina distinctly light grayish, 

 while in one specimen the pale color on the head and pronotum is 

 almost whitish. 



This species has been recorded from Fort Wliipple, Yavapai County, 

 Arizona, and the Mohave Desert, 



MELANOPLUS Stil. 

 Melanoplus flabellifer Scudder. 



A series of six males and seven females of this species was taken at 

 Williams, September 13. All are typical of flahellifer, showing little or 

 no tendency toward occidentalis or cuneatus. The coloration is quite 

 dark, the pattern much subdued. There is some variation in the 

 depth of the glaucous color of the caudal tibiae. This is the first 

 record of the species from Arizona. 



All of these specimens were taken in a field of low vegetation. The 

 insects were inactive as the dew was yet on the ground. The condi- 

 tion of a number of the specimens shows that their season was well 

 advanced. 

 Melanoplus herbaceus flavesoens Scudder. 



Two males of this form were taken at Yuma on July 28, one on 

 cultivated ground, the other on desert growth. 



The only previous record of this form from Arizona was from Bill 

 Wilham's Fork, Mohave- Yuma County, specimens from Phoenix being 

 intermediate between herbaceus and flavescens. 

 Melanoplus brownii Caudell. 



This species was abundant locally at Tucson, where a series of 

 twelve males and nineteen females were taken on July 26. In size 



