326 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Ser. 
Specimens exammed: 39; 19 males and 20 females. 
Abingdon Island, September 18 to 23, 1906, (not plentiful, 
more numerous in barren places, taken at 900 feet), 34, 12; 
James Island, 1 ¢, 12 ; and Duncan Island, August 14, 1906, 
and December 1 to 17, 1905, (common, especially higher up in 
valley and on summit, found in copulo and flying singly against 
the wind), 154, 182. 
14. Schistocerca literosa literosa (Walker) 
(Plate 18, figure 7) 
1870. Acridium literosum Walker, Cat. Dermapt. Saltat. Br. 
Mus., IV, p. 620. [ 6, Galapagos Islands. ] 
1893. S[chistocerca] I[iterosa] discoidalis Scudder, Bull. 
Mus: Comp. Zool; XXV, p. lo. | ¢, 2 ; Chatham Island) \Gala- 
pagos Islands. ] 
Scudder considered Chatham Island material as a distinct 
race from typical literosa, which race he supposed was peculiar 
to Charles Island, following Butler, who recorded the species 
from Charles Island, and whose study was probably based on 
Walker’s type. We follow Snodgrass in placing the race dis- 
cussed in the synonymy here. Sufficient work has now been 
done to show that the Darwinian material recorded by Butler 
was probably incorrectly labelled “Charles Island,” as literosa 
is now definitely known to be absent from that island. 
Chatham Island, January and February, 1906, and October, 
1905, (vather rare), 96, 5°. 
Scudder has given a thorough! tabular comparison of the 
races of this species and Snodgrass has added much valuable 
information®. We would note in addition only that the caudal 
femora, in the present series, range from dark bluish glaucous 
to light ochraceous-buff faintly tinged with bluish glaucous. . 
The majority of the series more closely approach dark bluish 
glaucous. 
® Proc. Wash. Acad. Sci., IV, pp. 425 to 431, pl. XXVII, fig. 4, (1902). 
