Order Lagomorpha Author James H. Honacki Author Kenneth E. Kinman Author James W. Koeppl text 1982 Alien Press, Inc. & The Association of Systematics Collections Lawrence, Kansas, USA Editor James H. Honacki Editor Kenneth E. Kinman Editor James W. Koeppl Mammal Species of the World (1 st Edition) 595 604 book chapter http://doi.org/10.5281/zenodo.7353003 0-89327-235-3 7353003 Ochotona collaris (Nelson, 1893) . Proc. Biol. Soc. Wash., 8: 117 . TYPE LOCALITY: U.S.A. , Alaska , near head of Tanana River . DISTRIBUTION: W.C. Mackenzie, S. Yukon , N. W. British Columbia ( Canada ); S.E. Alaska ( U.S.A. ). COMMENT: Broadbooks, 1965 , Am. Midi. Nat., 73:299-335, and Youngman, 1975 , Mammals of the Yukon Terr., Nat. Mus. Nat. Sci. (Ottawa), Publ. Zool. 10, 192 pp, considered collaris and princeps conspecific. Corbet, 1978, following Gureev, 1964 , included collaris in alpina . A statistical re-evaluation of craniometric data by Weston, 1981 , in Myers, Proc. World Lagomorph Conf., indicated that collaris , princeps , and alpina are separate species. Hall, 1981:286 , recognized collaris as a distinct species. ISIS NUMBER: 5301409001001002001.