_ 
242 Description, &c., of the Common Eastern Chipmunk. [March, 
is white throughout its whole length. The fur on the aar parts of the body forms 
a smooth coat, and is blackish-gray at its roots. There is no defined line of Separa- 
tion betwixt the colors of the back and belly.” Salas Boreali-Americana, Rich- 
ardson, 1829, pp. 182-183.) 
Hence it is clear that Richardson’s name /ys¢eri must be adopted 
as the subspecific name of the Northern animal. 
Following are diagnoses of the two races: 
TAMIAS STRIATUS TYPICUS.—Manus, 20 to 21™™ ; pes, 34 to 35™™ ; crown, rusty 
brown or grizzled brown; nape and back nearly to rump iron gray, sometimes 
mixed with grizzly; Ried dark ferruginous, sometimes almost chestnut; sides, rus- 
set fulvous, passing into ferruginous over the hips, and mixed with a variable quan- 
= of black tipped ode the fulvous (losing its black hairs and becoming paler) 
metimes encroaching upon the buffy white of belly and occasionally meeting irreg- 
fay along the median line below, but always leaving a well-defined line of demar- 
kation between the sides and belly; light lateral stripes strongly suffused with buff 
sometimes tinged with fulvous posteriorly; under surface of tail, mesially, dark 
fulvous to hazel, often very deep. 
Habitat. —Valley of the Lower Hudson and Long Island, New York; New Jersey; 
and southward in the highlands to the Carolinas and Georgia. 
TAMIAS STRIATUS LYSTERI (sub-sp. nov.).—Manus, 21.5 to 22.5mm ; pes, 36 to 
37™™ ; crown, rusty fulvous, sometimes very pale; nape and back nearly to rump 
clear ash gray; sides, pale buff, fading into white of belly without leaving any sharp 
line of demarkation between them; light lateral stripe nearly white, at most but 
faintly washed with buff; under surface of tail, mesially, pale buff to tawny buff. 
en —Mountains of Pennsylvania; Adirondack region of New York; North- 
n New England; Eastern Canada north to the Gulf of St. Lawrence, and in the 
Sas north to James’s Bay, Hudson’s Bay. 
/Genpied da e eens a caries which serve to 
, are certain cranial 
aah ties which are equally constant and distinctive. Publica- 
_ tion of these differences is deferred until a better series of skulls 
of the Southern form can be obtained. It may be stated here, 
however, that the brain case is a little broader in typical striatus, 
while the length of the molar series of teeth is greater in lystert. 
