376 Field Museum of Natural History — Zoology, Vol. XL 



Measurements — Total length (males), generally 10.25 to 12 in. (260 to 

 304 mm.) ; tail vertebrae, 3.50 to 4.25 in. (88 to 108 mm.) ; hind foot, 

 about 1.37 in. (35 mm.). Total length (females), 8.50 to 9.50 in. 

 (215 to 241 mm.); tail vertebrae, 2.75 to 3.25 in. (70 to 82.5 mm.); 

 hind foot, about 1.25 in. (32 mm.). 



Remarks — While females of this species often resemble males of 

 noveboracensis in size, they may generally be distinguished by the 

 relative difference in length of tail (see key, p. 360.) and in summer 

 pelage by the whitish color on toes and often on inner side of the 

 hind foot. 



Bonaparte's Weasel (Summer pelage). 

 (Putorius cicognanii.) 



Bonaparte's Weasel, sometimes called Short- tailed Weasel, is found 

 in more or less numbers throughout nearly the whole of Wisconsin. 

 It is common in the central and northern parts of the state, but scarce 

 in the extreme southeastern portion, and so far as known it has not been 

 recorded from southwestern Wisconsin or Illinois. Kennicott states 

 that he secured specimens of this species in northern Illinois (presum- 

 ably Northfield), one of which was sent to the Smithsonian Institution.* 

 This specimen (No. 268, marked R. Kennicott, N. Illinois) has been 

 examined by Mr. N. HolHster who writes: "Mr. Gerrit S. Miller and 



* Agr. Rept. for 1858, U. S. Patent Office Rept., 1859, p. 244. 



