Part 141

f. Mustela frenata agilis, sad., 21147, Field Mus. Nat. Hist., Macate, Perú.

g. Mustela frenata gracilis, ?, ad., 12431, Amer. Mus. Nat. Hist., type, Conard Fissure, Arkansas, Pleistocene.

h. Mustela a. stolzmanni, sad., 24.12.12.24, Brit. M. N. H., Myobamba, Perú.

FIGS. i-l. Mustela frenata nevadensis, all males, from Colorado, showing seasonal change in color, × approximately 1/9. Note the sharply marked molt line in the pelage of spring and the absence of any definite molt line in autumn.

i. No. 151415 U. S. Nat. Mus., Coventry, December 27, 1907.

j. No. 202741 U. S. Nat. Mus., Pierce Place, April 18, 1913.

k. No. 201681 U. S. Nat. Mus., Jefferson, June 23, 1913.

l. No. 41997 Amer. Mus. Nat. Hist., Navajo River, October 29, 1913.]

a. Mustela frenata agilis, sad., 21147, Field Mus. Nat. Hist., Macate, Perú.

b. Mustela frenata gracilis, ?, ad., type, 12431, A. M. N. H., Conard Fiss., Ark.

c. Mustela africana stolzmanni, sad., 24.12.12.24, Brit. M. N. H., Myobamba, Perú.

d. Mustela frenata agilis, sad., 21147, Field Mus. Nat. Hist., Macate, Perú.

e. Mustela frenata gracilis, ?, ad., type, 12431, A. M. N. H., Conard Fiss., Ark.

f. Mustela africana stolzmanni, sad., 24.12.12.24, Brit. M. N. H., Myobamba, Perú.

g. Mustela africana stolzmanni, ad., 563, Mus. Polonais d' Hist. Nat., type, Yurimaguas, Perú. The palate is broken longitudinally and the two maxillae are slightly out of normal position.

h. Mustela frenata oribasus, ad., 9058, M. C. Z., type, source of Kettle Riv., B. C.

i. Mustela frenata munda, ad., 91764, U. S. Nat. Mus., Point Reyes, Calif.

j. Mustela frenata frenata, ad., 991, Berlin Z. M., type, México City, D. F.

k. Mustela f. macrura, ad., 564, Mus. Polonais d' Hist. Nat., type of Mustela jelskii.

l. Mustela africana stolzmanni, ad., 563, Mus. Polonais d' Hist. Nat., type, Yurimaguas, Perú. Right half of lower jaw reversed.]

Mustela erminea arctica, both in U. S. B. S., from Mts. near Eagle, Alaska, 131256 and 131245.

Mustela erminea invicta, both in U. S. B. S., from Tungsten Mine, Washington, 235236 and 235235.

Mustela erminea muricus, both in M. V. Z., from Baker Creek, 8675 ft., Nevada, 41501 and 41502.

Mustela frenata nigriauris, both in M. V. Z., from California, 51666 from Concord and 73109 from Berkeley.

Mustela africana africana, 37475 A. M. N. H., from Pará, Brazil.

Mustela rixosa allegheniensis, both in M. Z. U. M., from Michigan, 83260 Swan Creek Farm and 88079 from Unadilla.]

INDEX TO VOLUME 4

Principal references are in boldface type