Esp. 8 BATCHELDER — SOME JUMPING MICE if 
1599 
The average measurements of three males and four females from Raleigh, 
North Carolina, are: total length, 191.3; tail vertebra, 115.4; hind foot, 
28.3 mm. 
The characters just given are based on these seven specimens 
from North Carolina. Two others from East Hartford, Connec- 
ticut, however, do not differ essentially from them in any respect. 
From the northward or eastward of East Hartford I have seen 
no typical Z. 4. americanus. Specimens from Northampton, 
Massachusetts, are intermediate between americanus and canadensis, 
though nearer to americanus. One individual from Orwell, Ver- 
mont, near the southern end of Lake Champlain, is distinctly 
canadensis, and a series of thirty-seven from the Adirondack 
Mountains (Keene Valley, N. Y.) shows such close resemblance 
to specimens taken in the immediate neighborhood of Quebec 
that it would be difficult to distinguish between them. The 
Adirondack examples perhaps have the characters of the sub- 
species a little more fully developed than do those from Quebec. 
Jumping mice from eastern Massachusetts (Barnstable, Ply- 
mouth and Middlesex Counties) exhibit an approach toward 
hardyt, although probably they are on the whole nearer to 
americanus. Lack of material from points between there and Mt. 
Desert prevents my tracing further steps in this intergradation. 
The only point in the region intervening between the type 
localities of Aardyi and canadensis, from which I have material 
available, is Madawaska, Aroostook Co., Maine. A considerable 
series (forty-seven specimens) taken at this place displays char- 
acters intermediate between these forms, but in most cases 
decidedly nearer to hardyi, This is the more interesting from 
the fact that Madawaska lies considerably nearer to Quebec than 
to Mt. Desert. 
To the generous kindness of Messrs. O. Bangs, C. E. Dionne 
and J. F. Whiteaves, I owe the opportunity of examining material 
from several localities unrepresented in my own collection. 
