On May 5, 1933, Mr. Clark P. Streator, informed the writer that he remembered taking the type specimen of _Mustela frenata saturata_ (Merriam) in the town of Siskiyou, Oregon. The exact place, he said, was reached, at the time of his work there, by going one or two blocks east of the depot, then through a garden into the thick woods where there were springs and numerous burrows of the rodent, _Aplodontia_. Two other weasels labeled as taken at Siskiyou, on September 28 and 29, 1893, by Mr. Streator, are much lighter colored than the type of _saturata_ and have the color of the underparts extended distally on the hind legs to the tips of the toes and in other features of coloration are more like _nevadensis_, the subspecies to which they are referred, than _saturata_. Probably these did not come from exactly the same place that the type specimen of _saturata_ did. Although Mr. Streator does not remember the taking of these particular specimens in 1893, he does remember that on this visit to Siskiyou, he walked southward through the railroad tunnel and collected on the opposite side of the ridge from Siskiyou. Here on more southern exposures, the country was markedly different than in the thick forest at Siskiyou. Probably these two specimens taken in 1893, and referred to _nevadensis_, came from a little way south of Siskiyou and from a different habitat and life-zone than the type specimen of _M. f. saturata_. Of the 6 specimens examined, only one, the type, shows malformation of the frontal sinuses such as result from infestation by parasites. _Specimens examined._--Total number, 6, as follows: =California.= _Siskiyou County_: Jackson Lake, 5900 ft., 2, Mus. Vert. Zoöl. _Humboldt County_: South Fork Mt., 5500 ft., 1, Mus. Vert. Zoöl. _County_ in question, Trinity Mts., summit east of Hoopa, 5800 ft., 1, U. S. Nat. Mus. =Oregon.= _Jackson County_: Mt. Ashland, 1, Univ. Oreg.; Siskiyou, 1, U. S. Nat. Mus. =Mustela frenata altifrontalis= Hall Long-tailed Weasel Plates 1, 19, 20, 21, 34, 35 and 36 _Mustela frenata altifrontalis_ Hall, Carnegie Instit. Washington Publ. 473:94, November 20, 1936. _Putorius (Gale) brasiliensis frenatus_, Coues, Fur-bearing animals, p. 142, 1877 (part). _Putorius saturatus_ Merriam, N. Amer. Fauna, 11:21, June 30, 1896 (part). _Mustela saturata_, Miller, U. S. Nat. Mus. Bull., 79:98, December 31, 1912. _Type._--Male, adult, skull and skin; no. 42093, Mus. Vert. Zoöl.; Tillamook, Tillamook County, Oregon; July 10, 1928; obtained by Alex Walker; original no. 717. The skull is complete and unbroken. P3 on the left side is missing; otherwise the teeth all are present and entire. The skin is well made and the enlarged scrotal pouch shows the collector's sexing of the specimen to have been correct.