Comparisons of specimens of E. m. pallidus and E. m. cacodemus, indicates that, in my opinion, E. m. cacodemus is entitled to subspecific recognition, for, the relationship between E. m. pallidus to E. m. cacodemus is the same as that between E. m. pallidus and E. m. confinis.
Specimens examined.—Total number, 58.
Park Co.: 2 mi. S and 2 mi. E Meteetse, 5,750 ft., 3.
Big Horn Co.: 6 mi. NW Greybull, 3,800 ft., 6; Greybull, 4 (BS); 7 mi. S Basin, 3,900 ft., 5.
Sheridan Co.: 5 mi. NE Clearmont, 3,900 ft., 1.
Campbell Co.: 5 mi. N and 8 mi. W Spotted Horse, 9; 6 mi. W and 4 mi. S Rockypoint, 4,200 ft., 1; 4 mi. S and 3 mi. W Rockypoint, 5; Middle Butte, 6,010 ft., 38 mi. S and 19 mi. W Gillette, 3; South Butte, 6,000 ft., 17½ mi. W and 40½ mi. S Gillette, 2; Ivy Creek, 8 mi. W and 5 mi. N Spotted Horse, 6.
Crook Co.: Moorcroft, Belle Fourche Valley, 8 (BS).
Washakie Co.: 15 mi. W Tensleep, in badlands, 1 (BS); 8 mi. S and 8 mi. W Worland, 1; 10 mi. S Tensleep, near No Wood Creek, 2 (BS).
Goshen Co.: Rawhide Buttes, 12 mi. S and 1 mi. W Lusk, 1.
Laramie Co.: unspecified, 1.