444 PROCEEDINGS OF THE ACADEMY OF [Oct., 



although the latter have the pattern more decided than the former. 

 The Bird Spring Mountains series has as a rule a pale ferruginous 

 appearance, although a few are somewhat ashy, while the North 

 Range and Goffs specimens are decidedly ashy, the former, however, 

 with the pattern well contrasted, in the males as strongly as in the 

 Sentinel individuals. The Kelso series is whitish or pale buffy yellow 

 in general tone, while the Cottonwood specimens more nearly resemble 

 the Bird Spring Mountains series than any of the others. The Arden 

 specimen is much like Kelso individuals, but the head and portions 

 of the pronotum and cephalic and median limbs are suffused with 

 dull vermilion. 



As far as examined the bar on the wing appears to be uniform in 

 size, while the disk is very slightly more yellowish than in the Sentinel 

 specimens. 



At Kelso, in the Bird Spring Mountains, and in the North Range 

 of the Providence Mountains the species was found on the ground and 

 also on small desert weeds, frequently in arroyos. 



The previous Californian records of the species are from Mohave 

 and Lancaster. 



Derotmema laticinctum Scudder, 



It was with considerable surprise that this species was recognized 

 in the series of Orthoptera taken at Cima, California, on August 12. 

 This locality is represented by a series of sixteen males and four females 

 which fully agrees with eastern Arizona and New Mexico material. 

 At Cima the species was plentiful. 



This is the first record of the species from California. 



Derotmema saussureanum Scudder. 



This southern Californian species is represented by a series of thirty 

 specimens taken as follows : Pasadena, August 1, eleven males, thirteen 

 females; near Rubio Canyon, altitude 1,400 to 1,600 feet, August 8, 

 two females; Los Angeles River, Los Angeles, August 24, one male; 

 Beaumont, Riverside County, July 30, one male; Devore, San Ber- 

 nardino County, September 9, one male; summit Cahon Pass, Sep- 

 tember 9, one female. 



There is considerable variation in the base color in the series, the 

 Pasadena representation exhibiting numerous modifications, ashy, 

 buffy, dull reddish-brown and sometimes overcast with a hoary 

 suffusion. 



At Pasadena the insect was found common on dry spots in and near 

 the Arroyo Seco. 



