Part 127

1937. Activities of a weasel at a wood rat colony. Jour. Mamm., 18:364, August 14, 1937.

1938. Biotic relations of the wood rat (Neotoma fuscipes) in the Berkeley Hills. Jour. Mamm., 19:1-36, figs. 1-4, February 14, 1938.

WARREN, E. R.

1924. Ground squirrels and weasels. Jour. Mamm., 5:265-266, November 15, 1924.

1932. When do weasels mate? Jour. Mamm., 13:71-72, February 9, 1932.

WIGHT, H. M.

1932. A weasel attacks a man. Jour. Mamm., 13:163-164, May 11, 1932.

WILLIS, J. C.

1922. Age and Area: A study in geographic distribution and origin of species. University Press, Cambridge, England, x + 259 pp., illustrated.

WINECOFF, T. E.

1930. Least weasel in Pennsylvania. Jour. Mamm., 11:312-313, August, 1930.

WOLDRICH, J. N.

1884. Diluviale Fauna von Zuzlawitz bei Winterberg im Bohmerwalde. Dritter Theil.... Sitzungsberich. d. K. Akad. d. Wissen. Math.--Natur.--Classe, 88(heft 3, erste abth.):978-1057, 3 pls., 2 figs. in text.

WRIGHT, P. L.

1942A. Delayed implantation in the long-tailed weasel (Mustela frenata), the short-tailed weasel (Mustela cicognani), and the marten (Martes americana). Anat. Rec., 83:341-353, 2 pls., July, 1942.

1942B. A correlation between the spring molt and spring changes in the sexual cycle in the weasel. Jour. Exp. Zoöl., 91:103-110, October, 1942.

1947. The sexual cycle of the male long-tailed weasel (Mustela frenata). Jour. Mamm., 28:343-352, 1 pl., 3 figs. in text, November 19, 1947.

1948A. Breeding habits of captive long-tailed weasels (Mustela frenata). Amer. Midland Nat., 39:338-344, March, 1948.

1948B. Preimplantation stages in the long-tailed weasel (Mustela frenata). Anat. Rec., 100:595-607, 2 pls., April, 1948.

1950. Effects of gonadotropic hormone on the pelage of white winter long-tailed weasels; abstract. Anat. Rec., 106(no. 2):130, February, 1950.

ZIMMERMANN, K.

1943. Zur Kenntnis deutscher Maus-und Zwerg-Wiesel. Zeitschr. fur Säugetierkunde, 15(3):289-298, 2 pls., 2 figs. in text, 3 tables, January 11, 1943.

Transmitted May 22, 1950.

a. Mustela erminea arctica, ad., 178405, U. S. Nat. Mus., Tanana, Alaska.

b. Mustela erminea semplei, sad., 6499, Carnegie Mus., Southhampton Island.

c. Mustela erminea kadiacensis, ad., 107496, U. S. N. M., Kodiak Island, Alaska.

d. Mustela erminea richardsonii, ad., 133847, U. S. N. M., Ft. Franklin, MacK.

e. Mustela erminea cicognanii, ad., 53788, Mus. Vert. Zoöl., Lopez, Pennsylvania.