1926J GrinneU-Dixon: Two New Races of the Pine Marten 417 



Remarks. — Although vancouverensis and nesophila are both de- 

 scribed from islands, thej^ obviously belong to the same series of 

 geographic races with caurina of the mainland. Furthermore, indi- 

 vidual variation in the several diagnostic features brings very nearly 

 complete bridging between them. For these reasons, the trinomial 

 seems best to employ; and Osgood's M. nesojjJiUa becomes Mustela 

 caurina nesophila. The material as yet available for study indicates 

 the existence of two distinct species of marten in northwestern 

 America — Mustela caurina, with short bullae and other minor char- 

 acters, on the Pacific Coast from Admiralty Island south to east- 

 central California ; and Mustela americana, with long bullae, etc., in 

 the interior of the continent and west at the north clear to the 

 Alaska Peninsula. Each of these species contains several well-marked 

 geographic races. 



The authors are indebted to Mr. Stanley G. Jewett, of Portland, 

 Oregon, for the loan of a series of specimens of Martes caurina caurina 

 from his private collection of mammals. 



LITERATURE CITED • 



Grinnell, J., and Stoker, T. I. 



1916. Diagnosis of seven new mammals from east-central California. Univ. 

 Calif. Publ. Zool., 17, pp. 1-8, 1 fig. in text. 

 Kellogg, L. 



1916. Report upon mammals and birds found in portions of Trinity, Siskiyou, 

 and Shasta counties, California, with description of a new Dipo- 

 domys. Univ. Calif. Publ. Zool., 12, pp. 335-398, pis. 15-18. 



Merriam, C. H. 



1890. Descriptions of twenty-six new species of North American mammals. 

 Description of a new marten {Mustela caurina) from the northwest 

 coast region of the United States. U. S. Dept. Agric, Div. Orn. and 

 Mam., N. Am. Fauna, 4, pp. 27-29. 



Osgood, W. H. 



1901. Natural history of the Queen Charlotte Islands, British Columbia. 

 U. S. Dept. Agric, Div. Biol. Surv., N. Am. Fauna, 21, pp. 7-50, 

 pis. 1-5. 



SWARTH, H. S. 



1912. Report on a collection of birds and mammals from Vancouver Island. 



Univ. Calif. Publ. Zool., 10, pp. 1-124, pis. 1-4. 

 Trammitted February 1, 1926. 



