For the past several years there have been no authentic records of the Canada lynx in the park, and it is extremely doubtful that the animal now occurs within park boundaries. HYPOTHETICAL LIST Although not known to occur in Mount Rainier National Park prior to the date of this publication, the following mammals may be recorded: Alaska Brown Bat, _Myotis lucifugus alascensis_ Miller Longeared Bat, _Myotis evotis pacificus_ Dalquest Northwest Coast Bat, _Myotis californicus caurinus_ Miller Big Brown Bat, _Eptesicus fuscus bernardinus_ Rhoads Puget Sound Weasel, _Mustela ermina streatori_ (Merriam) Townsend Chipmunk, _Tamias townsendii townsendii_ Bachman Yellow Pine Chipmunk, _Tamias amoenus affinis_ Allen Oregon Flying Squirrel, _Glaucomys sabrinus oregonensis_ (Bachman) The occurrence of the following mammals was listed by Taylor and Shaw, _Mammals and Birds of Mount Rainier National Park_, 1927, as follows: Muskrat, _Ondatra zibethicus osoyoosensis_ (Lord). “In lower portions of the park; apparently now trapped out within its boundaries.” Norway Rat, _Rattus norvegicus norvegicus_ (Erxleben). “Here included on the authority of J. B. Flett, who has observed it at Longmire.” House Mouse, _Mus musculus_ Linnaeus subsp? “At Longmire; at present scarce, perhaps extirpated.” It is believed that the three species above are not now found within the park. BIBLIOGRAPHY ANTHONY, H. E. 1928 _Field Book of North American Mammals. G. P. Putnam’s Sons, New York._ BAILEY, V. 1936 _The Mammals and Life Zones of Oregon, North American Fauna, Number 55, U. S. Department of Agriculture, Bureau of Biological Survey, Washington, D. C._ BROCKMAN, C. FRANK 1947 _Flora of Mount Rainier National Park. U. S. Department of Interior, National Park Service, U. S. Government Printing Office, Washington, D. C._ DALQUEST, WALTER W. 1948 _Mammals of Washington. University of Kansas Publications, Museum of Natural History, Volume 2._ HAMILTON, W. J. JR. 1939 _American Mammals. McGraw-Hill Book Company, Inc., New York._ SETON, ERNEST THOMPSON 1929 _Lives of Game Animals, Volumes 1-4. Doubleday, Doran and Company, Inc., Garden City, New York._ TAYLOR, W. P., and SHAW, W. T. 1927 _Mammals and Birds of Mount Rainier National Park. U. S. Department of Interior, National Park Service, U. S. Government Printing Office, Washington, D. C._ 1929 _Provisional List of the Land Mammals of the State of Washington. Occasional Papers of the Charles R. Conner Museum, Number 2._ WRIGHT, GEORGE M., and THOMPSON, BEN H. 1935 _Fauna of the National Parks of the United States, Fauna Series Number 2. U. S. Government Printing Office, Washington, D. C._