324 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Serr. 
62; South Seymour Island, 23, 52; Indefatigable Island, 
2°) Gardener Islands 52: 
S pecimens examined: 140; 73 males, 66 females, one 1 im- 
mature individual. 
Tagus Cove, Albemarle Island, March 22 to April 9, 1906, 
26,12; Cowley Mountain, Albemarle Island, August, 1906, 
(common in places, lower levels to sea, especially seen clinging 
ito brush to escape the strong breeze; not thick in green zone up 
to 1400 feet; very common in grassy districts at about 1800 
feet), 106, 72; Villamil, Albemarle Island, May, 1906, 
(rather common on roadside; specimens also found at 1400 
feet), 36,72 ; James Island, July, 1906, and December, 1905, 
(near coast), 46, 102 ; Jervis Island, December, 1905, (rare 
and hard to capture), 26, 22; Duncan Island, August 14, 
1906, 24, 12°; South Seymour Island, November, 1905 
(quite common, especially on big lava piles), 246, 52 ; Inde- 
fatigable Island, November, 1905, 1? ; Academy Bay, Inde- 
fatigable Island, July, 1906, (common on plains near coast), 
1? ; Barrington Island, October, 1905, (not common, found 
on bare lava streams), 1246, 132 ; Chatham Island, January 
and hebritany. 1900.) (rather scarce) a)o )lenitivento 4) @hiaules 
Island, October, 1905, (common up to highest point of Island), 
S16 179) and Gardner Island) @ctober 5" 1905s ney 
13. Schistocerca intermedia Snodgrass 
(Plate 18, figure 6) 
1902. Schistocerca intermedia Snodgrass, Proc. Wash. 
cade Sci IVE py 4316 pl OO@VE sien Shy o Drncamdislamas 
Galapagos Islands. | 
The race described as 1. borealis by Snodgrass’, shows no 
difference of importance from material of this variable species 
from Duncan Island and is consequently placed in synonymy 
here. 
This insect is one of the most difficult forms of Orthop- 
tera we have ever studied. A single individual blends so re- 
markably the features of S. melanocera (Stal) and of S. 
® These specimens are clearly typical of the nas species, though on this island 
Schistocerca intermedia Snodgrass is the dominant ty 
7 Proc. WER Acad. Sci., IV, p. 435, pl. XXVII, ae 2. (1902). 
