186 PROCEEDINGS OF THE ACADEMY OF [1896. 



southern and most northern extremes in the east show color differ- 

 ences which may eventually be recognized as subspecific. Exam- 

 ples of this variation may be found in comparing a series from the 

 mountains of northern New Jersey with samples from the pine bar- 

 rens of the southern part of that State. The former are blackish- 

 brown above and plumbeous gray beneath, the latter rusty brown 

 with silvery gray sides and underparts. 



Specimens — Samburg, 8 ; Raleigh, 6 ; Bellevue, 2 ; Harriman, 2. 



Genus EVOTOMYS Coues. 



10. Evotomys carolinensis Merriam. Carolina Wood Vole. 



My only specimens of this large and interesting woodland mouse, 

 which Dr. Merriam discovered on Roan Mountain in 1877, are not 

 much more than half-grown, and all of them were trapped in the 

 border of the fir belt just below Cloudland Hotel, in Mitchell 

 County, N. Carolina, two of the specimens being taken within forty 

 yards of the Tennessee strip. Though their runways were abund- 

 ant there, a strange fate prevented my securing any specimens on 

 Tennessee soil. In my four young specimens the color is much 

 dai'ker than in ga2)peri of the same age, corresponding very closely 

 to the shade characterizing E. g. suturatus of the northwest. In the 

 oldest specimen the hoary appearance of the belly is untinged with 

 fulvous ; the others are plumbeous, with a scant mixture of gray and 

 ochre. In all the specimens the claws of the three middle hind 

 toes are each covered with a sheath or brush of white, bristly hairs, 

 which exceed the claws in length and project beyond them. 



Contrary to my expectations, the Wood Vole of Roan Mountain 

 was not found in wet places but seemed to prefer rather open run- 

 ways among the fallen logs, moss and ferns on the borders of the 

 forest, and one specimen was taken under the shelter of a pigpen, 

 just below the hotel. Such situations were preferred to the depths 

 of the forest, owing to the variety of edible grasses and weeds only 

 found in clearings. Dr. Merriam writes me that he has specimens 

 taken on the Tennessee side of Roan Mountain. 



Specimens— Roan Mt., Mitchell Co., N. C, 3. 



Genus FIBER Cuvier. 



11. Fiber zibethicus (L.). Muskrat. 



Owing to high water in the rivers during my visit I was unable 

 to reach the mussel shoals and collect specimens of the Unionidse of 

 many streams in Tennessee. This difficulty was largely remedied 



