422 Field Museum of Natural History — Zoology, Vol. XI. 



Specimens examined from Wisconsin: 

 Solon Springs, Douglas Co., 4; Sayner, Vilas Co., i; Lac Vieux Desert, 

 Vilas Co., 3; (M.P.M.) Marinette Co., 1 = 9. 



Area of Intergradation 



Map illustrating approximate range of the Shrews belonging to the genus Neosorex in eastern 

 United States and southern Canada, south of latitude 52°. 



Neosorex palustris (Richardson). Type locality — Unknown; North America, 

 somewhere between Hudson Bay and the Rocky Mountains. Description 

 as previously given. 



Neosorex alhiharbis Cope. (Proc. Acad. Nat. Sci. Phila., 1862, p. 188.) Type 

 locality — Profile Lake, New Hampshire. Resembles palustris in size and 

 coloration of upper parts, but color of under parts is darker. 



Genus BLARINA Gray. 

 Short-tailed Shrews. 

 Blarina Gray, Proc. Zool. Soc. Lond., 1837, p. 124. Type Sorex 

 talpoides Gapper = Sorex brevicaudus Say. 



Tail very short, -less than one-third of total length; ears concealed 

 by fur; teeth 3c or 32, tipped with reddish brown; unicuspids 4 or 5, 



first and second large, third and fourth much 

 smaller, fifth very small or absent; first four 

 unicuspids with small secondary cusp on 

 inner side. 



Dental formula: 



4-4 or 3-3 



I. 



' r- ^"^ T) 2-2 



-J C » Fm. ) 



0-0 i-i 



M, 



3-3 

 3-3 



Skull of a Shrew (Blarina), 

 enlarged. 



= 30 or 32. 



