=_Sorex obscurus alascensis_= Merriam. Dusky Shrew.--Comparison of two specimens from 7 miles SSE Haines and eight from Sullivan Island (six from the northeast end of the island and two from the southeast end) with topotypes of _Sorex obscurus longicauda_ Merriam from Wrangell, Alaska, and with topotypes of _Sorex obscurus alascensis_ from Yakutat, Alaska, shows that our specimens are intermediate between the two named kinds. However in nine of ten characters these specimens more closely resemble _S. o. alascensis_ than _S. o. longicauda_. Measurements of specimens from Wrangell and from localities progressively northward along the Alaskan coast reveal a decrease in size of the skull in a clinal fashion. Specimens from Sullivan Island are larger than those from the mainland south of Haines, which are in turn larger than specimens from 9 miles W and 4 miles N of Haines (reported upon by Baker, _op. cit._). No step is apparent in this cline and assignment of specimens must be made on a somewhat arbitrary basis. Specimens from Juneau, Alaska, in the Biological Surveys Collection of the United States National Museum, were assigned by Jackson (N. Amer. Fauna, 51: 128, 1928) to _S. o. alascensis_ but seem to us to be closer to _S. o. longicauda_. =_Sorex palustris navigator_= (Baird). Water Shrew.--Two males taken on August 5, at Peters Creek, elevation 300 ft., 20 miles NE of Anchorage provide a northwestern extension of the known range of this species. In external and cranial characters the males resemble _S. p. navigator_ from 9 miles W and 4 miles N of Haines, Alaska, and from Washington County, Idaho. The specimens from Peters Creek do not agree with the description of _Sorex alaskanus_ Merriam as given by Jackson (_op. cit._:189) although one, a second year animal, has the lambdoidal crests exceptionally well developed, as does _S. alaskanus_. =_Myotis lucifugus lucifugus_= (LeConte). Little Brown Myotis.--A male taken at Peters Creek, elevation 300 ft., 20 miles NE of Anchorage, is darker than specimens assigned to this subspecies from northeastern British Columbia (Muncho Lake). Eight skins and skulls (three adults and five young of the year) and 18 specimens in alcohol taken at Screw Creek, elevation 2600 ft., mile 742 (10 miles S and 50 miles E Teslin, Yukon Territory), British Columbia, seem typical of _M. l. lucifugus_. These were obtained on August 11, 1951, at the same locality where on July 1, 1947, a single bat assigned to _M. l. alascensis_ Miller was taken (see Baker, _op. cit._:95). The latter specimen is readily distinguished by its darker color both above and below from those taken in 1951.