Article IV. REPORT ON THE MAMMALS COLLECTED 

 IN NORTHEASTERN SIBERIA BY THE JESUP 

 NORTH PACIFIC EXPEDITION, WITH ITINER- 

 ARY AND FIELD NOTES, BY N. G. BUXTON. 



BY J. A. ALLEN. 

 CONTENTS. 



PACK. 



Introduction , 101 



Itinerary and Description of the Country (by N. G. Buxton) 1 04 



Annotated List of Mammals (with descriptions of new species) ... 119 



American Affinities of certain East Siberian Mammals 182 



INTRODUCTION. 



This is the first of a series of papers on the zoological results 

 of the Siberian Division of the Jesup North Pacific Expedition. 

 Other reports will follow on the birds and fishes. 



The natural history collections were made principally by 

 Mr. N. G. Buxton, of Johnstown, Ohio, whose experience in 

 arctic collecting at Point Barrow, Alaska, on the Mcllhenny 

 Expedition, in 1897-98, had especially fitted him for his work 

 in Siberia. His 'Itinerary,' given below, fully describes the 

 nature of the country visited, including its climatic and topo- 

 graphic features, while his field notes, given in connection 

 with the species to which they relate, add greatly to the value 

 of the present paper. Mr. Buxton collected mainly in the 

 neighborhood of Gichiga, on the west coast of the Okhotsk 

 Sea, but also at Marcova, on the middle Anadyr River, 600 

 miles north of Gichiga, and at some other points. Mr. Bux- 

 ton's zeal and industry are attested by the large number of 

 specimens he obtained in a country where the fauna is meager 

 and the season for field work is limited to a comparatively 

 small portion of the year. The fine condition of the speci- 

 mens is evidence of his skill and care as a collector. 



The present paper includes not only the mammals collected 

 by Mr. Buxton, but also those obtained by other members of 

 the Siberian Expedition. These comprise a few collected on 

 the lower Amoor River by Dr. Berthold Laufer, a few taken 



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