238 Description of a new Subspecies [March, 
MEASUREMENTS OF FEET, SHOWING DECREASE IN SIZE FROM THE NORTH 
i SOUTH WARD,! 
Condition 
Locality. Manus. Pes. when measured. 
Locust Grove, New York (average of 28)...... 22.11 36.17 In the flesh. 
Sing Sing, New York (average of 8).......... 21.71 34:77 o 4 
Washington, D. C. (one specimen) .......... 20 34 e K 
Charleston, S. C. (one specimen) 34 Skin ? 
It must be remembered that the above measurements of New 
York specimens are averages. The largest manus from the 
Adirondack region measures 23™: the largest pes 38" The 
smallest manus from the Lower Hudson measures 20"™' the 
smallest pes 34. 
In the summer of 1884, Dr. A. K. Fisher, at my request, sent 
me several chipmunks from Sing Sing, New York, in the valley 
of the Lower Hudson. On placing them alongside my own 
series from the Adirondack region I was at once struck with the 
marked differences between them, and was convinced that they 
were subspecifically separable. This opinion was confirmed the 
following year by the acquisition of an adult female from the 
mountains of North Carolina, kindly presented to me by Mr. 
William Brewster, who killed it in the town of Sylva, Jackson 
county, North Carolina, May 30, 1885. This individual, for two 
reasons, may be regarded as the type of sfriatus proper: First, 
because it came from the same general region from which 
Catesby’s probably came (and it will be remembered that Lin- 
nacus’s diagnosis was based on Catesby’s description and figure); 
and, second, because it is representative of a phase of pelage most 
remote from that of the Northern animal. This skin (No. 1450 
Mus. C. H. M.) is very much darker than the darkest Washing- 
ton example I have seen, and the ferruginous of the rump iS 
restricted in extent, and is overcast by the liberal admixture of 
black-tipped hairs. There is an obscure. dark spot at the end of 
the nose above, and another at the posterior angle of each eye. 
The eyelids are buff, and the color of the lower lid can be traced 
backward, though becoming very faint, to the lower margin of 
1 The measurements here given, as well as all others which appear in this pape 
were taken by myself with dividers; all were made with the utmost care, anda 
large proportion were verified by duplicate measuring. 
2 All measurements from skins were taken in the following manner : The feet 
were dipped in hot water, and then wra with wet cotton-wool and left for 
several hours until the joints became flexible, so that the toes could be straightened — 
readily. oes ; i 
