322 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H SER. 
In the present series we would note that the material from 
Hood Island and the adjacent Gardner Island averages darker 
in general coloration, with tegminal bars more weakly indi- 
cated, than in material from the other islands. In addition, a 
very conspicuous, probably genetic, factor is developed in four 
males and one female from Hood Island, in which the pronotal 
disk and dorsal fields of the tegmina are margined laterally, 
narrowly and very conspicuously, with light buff. 
The series containing the majority of the most contrastingly 
colored individuals, with tegminal bands very decided, is from 
Barrington Island. The most contrastingly colored individual, 
however, comes from Abingdon Island. 
The caudal femora are, in the present series, pale, have the 
distal third suffused, have this suffusion and an additional 
broad meso-proximal annulus, or have all but the proximal 
portion suffused. These types all intergrade and are clearly 
due to recession or intensification of the color pattern. 
Distinct difference in the width of the vertex is found, par- 
ticularly in the male sex. No geographic correlation appears 
to exist and we believe the difference found, though much more 
decided than is usual within a species, to be best considered 
another feature of the striking individual variation exhibited by 
fuscoirroratus. 
Specimens examined: 132; 52 males, 75 females and 5 imma- 
ture individuals. 
Abingdon Island, September, 1906, (small immatures seen 
here and there; adults rare and going pretty well up the moun- 
tain), 2,2? ; Narborough Island, April, 15, 1906, 36,12 ; 
Banks Bay, Albemarle Island, April, 1906, (common), 22 ; 
Villamil, Albemarle Island, (common), 2 ¢ ; Cowley Mountain, 
Albemarle Island, August 9 to 13, 1906, (very common from 
shore up to 1100 feet, and perhaps higher), 114, 302, 4 im- 
mature @ ; James Island, December 21, 1905 to January 5, 
1906, 2 8 ; South Seymour Island, March, 1 ¢ ; Academy Bay, 
Seymour Island, July, 1906, (fairly common in more sandy 
spots), 28, 12; Barrington Island, October, 1905, (rare), 
86,72; Chatham Island, January, April, July and October, 
1905 and 1906, (at Wreck Bay taken at light at night on 
beach), 62 ; Charles Island, February, May, June and October, 
1905 and 1906, (at Cormorant Bay, common up to 800 feet), 
