Evidence of intergradation between _M. f. peninsulae_ and _M. f. olivacea_ is provided by specimens of _olivacea_ from Gainesville, Florida, and the Okefinokee Swamp, Georgia. These specimens, on the average, have the color of the underparts wider, the skull larger, and the tympanic bullae relatively larger than do specimens of _olivacea_ from farther north. In these features, approach to _M. f. peninsulae_ is shown. Light facial markings occur in this subspecies. They are similar to those possessed by weasels which occur at the same latitude and under corresponding climatic conditions on the Pacific Coast. The type specimen and one from Tarpon Springs have white facial markings. Two of the three specimens from Apopka also show white facial markings, although in reduced amount. One of the four specimens of _M. f. olivacea_ from Gainesville, Florida, has well-developed light (white) facial markings. Also of the four specimens of _M. f. olivacea_ examined from Okefinokee Swamp, Georgia, one has prominent white facial markings. However, in it the pattern is so unusual as to suggest that it is an instance of partial albinism rather than an outcropping of a racial tendency, or a pattern of coloration induced by climatic factors. None of the eight available skulls show any infestation of the frontal sinuses by parasites. _Specimens examined._--Total number, 10, arranged by counties from west to east. =Florida.= _Pasco County_: Hudson's, 1[1]. _Pinellas County_: Tarpon Springs, 1[1]. _Hernando County_, 1[91]. _Polk County_: Auburndale, 1[91]; no locality more definite than county, 1[91]. _Orange County_: Apopka, 3[61]. _Volusia County_: Enterprise, 1[60]. _Seminole County_: Osceola, 1[2]. =Mustela frenata spadix= (Bangs) Long-tailed Weasel Plates 16, 17, 18, 31, 32 and 33 _Putorius longicauda spadix_ Bangs, Proc. Biol. Soc. Washington, 10:8, February 25, 1896; Merriam, N. Amer. Fauna, 11:21, figs. 10, 11, June 30, 1896; Cory, Mamm. Illinois and Wisconsin, p. 374, 1912. _Mustela longicauda spadix_, Miller, U. S. Nat. Mus. Bull., 79:98, December 31, 1912; Bailey, Journ. Mamm., 10:156, May 9, 1929. _Mustela longicauda_, Johnson, Journ. Mamm., 11:439, November 11, 1930. _Mustela noveboracensis_, Murie, Journ. Mamm., 16:321, November 15, 1935. _Mustela frenata spadix_, Hall, Carnegie Instit. Washington Publ. 473:105, November 20, 1936. _Type._--Male, young, skull and skin; no. 3265/1786, Amer. Mus. Nat. Hist.; Fort Snelling, Hennepin County, Minnesota; June 25, 1889; obtained by Edgar A. Mearns; original no. 812. The skull is complete although there are fractures on the top of the braincase, on the right side of the braincase and at the middle of the right zygomatic arch. The teeth all are present and entire. The skin, although overstuffed, is complete, well preserved, and in summer pelage.