FEB., 1912 MAMMALS OF ILLINOIS AND WISCONSIN CORY. 365 



Supposed distribution of the Minks (subgenus Lutreola) in eastern United States and Canada. 

 The range limits of the various forms have not as yet been satisfactorily determined. 



Putorius vison (ScHREBER). (Saugthiere, III, 1777, p. 463.) Type locality 

 Eastern Canada. A small, dark form. 



Putorius v. lutreocephalus (HARLAN). Type locality Maryland. Larger and 

 not so dark as vison. Description as previously given. 



Putorius v. vulgivagus (BANGS). (Proc. Bost. Soc. Nat. Hist., XXVII, 1895, p. 536.) 

 Type locality Burbridge, Plaquemines Parish, Louisiana. Somewhat paler 

 than vison; skull arched and rounded. 



Putorius v. lacustris (PREBLE). (N. Amer. Fauna, No. 22, 1902, p. 66.) Type 

 locality Echemamish River, near Painted Stone, Keewatin, Canada. "Sim- 

 ilar to P. vison but larger; skull more angular" (Preble); very close to lutreo- 

 cephalus. 



Putorius lutensis BANGS. (Proc. Bost. Soc. Nat. Hist., XXIX, 1898, p. 229.) 

 Type locality Matanzas Inlet, St. John Co., Florida. Size smaller than 

 lutreocephalus; tail shorter; general color decidedly paler and less brown. 



