Vol. 32, pp. 9-10 February 14, 1919 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



THE WISCONSIN NAPAEOZAPUS. 

 BY HARTLEY H. T. JACKSON. 



During the summer of 1917, while conducting field work in 

 Wisconsin for the U. S. Biological Survey, which is cooperating 

 with the Wisconsin Geological and Natural History Survey in 

 a study of the life-zones and terrestrial vertebrates of that 

 State, the writer collected specimens of the genus Napaeozapus 

 at three different localities. These were the first members of 

 this genus to be found in Wisconsin. The geographic range 

 of the genus was extended still farther to the southwest last 

 summer (1918), when I trapped one on the west side of the Black 

 River, 2 miles west of Withee, Wisconsin. 



A critical examination of these specimens is hardly necessary 

 to show that they represent a clearly defined and unrecognized 

 form. It may be identified by the following description: 



Napaeozapus insignis frutectanus, 1 subsp. nov. 



Type specimen. — Adult d, skin and skull, No. 227,349, U. S. National 

 Museum, Biological Survey Collection; from Crescent Lake, Oneida 

 County, Wisconsin; collected September 6, 1917, by Hartley H. T. Jack- 

 son. Original number 896. 



Geographic range. — Known only from northern Wisconsin. 



General characters. — Smaller than Napaeozapus insignis abietorum, with 

 shorter hind foot ; about the size of Napaeozapus insignis insignis; different 

 from both in color. Compared with either N. i. insignis or N . i. abietorum 

 the dorsal area (stripe) is more sharply defined (intermixed with more 

 blackish-hairs) ; color of sides duller and paler, though showing more 

 distinctly the scantily intermixed coarse blackish hairs; border of ears 

 appearing distinctly more whitish, narrowly edged with between pinkish 

 buff and pale pinkish buff (as compared to cinnamon in insignis and 

 abietorum); nose and face more blackish; white portion of terminus of tail 

 averaging shorter. 



'Latin, an inhabitant of shrubbery or bushy places. 



4— Proc. Biol. Soc. Wash., Vol. 32, 1919. (9) 



