d. Mustela erminea olympica, ♀ ad., 242133, U. S. Nat. Mus., Hayes Creek, Wash.
e. Mustela erminea streatori, ♀ ad., 9040, D. R. Dickey Coll., Blaine, Oregon.
f. Mustela erminea gulosa, ♀ ad., 77370, U. S. Nat. Mus., Trout Lake, Wash.
g. Mustela erminea muricus, ♀ ad., 41502, Mus. Vert. Zoöl., Baker Creek, Nevada.
h. Mustela erminea angustidens, ♀?, ad., 12435, A. M. N. H., Conard Fissure, Ark.
i. Mustela erminea angustidens, ♀?, ad., 11766, A. M. N. H., Conard Fissure, Ark.
Plate 13. Photographs, retouched, of skulls in ventral view of eight subspecies of Mustela erminea. Natural size.
a. Mustela erminea haidarum, ♀ ad., 100624, U. S. N. M., Moresby Island, B. C.
b. Mustela erminea anguinae, ♀ ad., 13673, Nat. Mus. Canada, Cape Scott, B. C.