KEY TO LAND MAMMALS OF NORTHEASTERN NORTH AMERICA I45 



112 (4|); tail vertebrae, 40 (1^); tind foot, 14 (A), (richardsdni; name 

 from that of John Richardson) 



Richardson's shrew, an imperfectly known species, occurs in thebMreal 

 zone of Saskatchewan, northern Minnesota, the north shore of Lake 

 Superior and in New Brunswick^. 



Sorex fumeus Miller Smoky shrew 



1895 Sorex fumeus Miller, North Americau fauna no. 10, p 50. (Peter- 

 . boro, Madison co. N. Y.) 

 Smoky slate color, slightly paler below. Total length, 115 (4^) ; tail verte- 

 brae, 45 (If) ; hi ud f.ot, 14 (A), (fumeus; Lat., smoky) 



The smoky shrew inhabits the forests of the boreal zone and upper 

 part of the transition zone in eastern North America, srmth into the 

 southern Alleghanies. 



Sorex personatus Geoffrey St Hilaire Maskea shrew 



Clear hrotvn (sepia or dral)) above, whitish gray below. Total length, 90 (3|) 

 to 110 (4t%) ; hind foot, 13 (U) or less, (personatus; Lat., masked) 



The masked shrew occurs throughout the greater part of boreal North 

 America, and in cold situations even in the upper austral zone. It is 

 divisible into several races, three of which occur within our limits. 



SUBSPECIES OF SOREX PERSONATUS 



Total length about 95 (3f) S... personatus lesueuri 



Total length about 105 (4i) 



Back sepia brown at all seasons S. personatus personatus 



Back iight (broccoli) brown in summer, drab 



gray in winter S. personatus naiscix 



Sorex personatus personatus I. Geoffroy St Hilaire Northern 



masked shrew 



1827 Sorex personatus E. Geoffroy St Hilaire, Mem. du museum, d' hist. 



nat. Paris. 15 : 122. (Eastern United States, probably New York) 

 1895 Sorex personatus Miller, North American fauna. 31 Dec. 1895. no. 

 10, p. 53. 

 Upper parts sepia brown; under parts whitish gray. Total length, 105 (41); 

 tail vertebrae, 40 (Its) ; hind foot, 12 (-J), (personatus; Lat., masked) 



The northern masked shrew is abundant in a great variety of situations 

 throughout the transition zone and Canadian zone of the eastern United 

 States and eastern Canada. 



1 For occurrence of Sorex richardsoni In New Brunswick see Cox, Canadian record of 

 science. Ap. 1896. 7 : 117-18. 



