in the Collection of the British Museum. 419 
Sc. Townsendii, Bach. 
Sc. Belcheri, Gray, Ann. & Mag. Nat. Hist. 1842, x. p. 264; Zool. Sulph. 
t. 12. Var., S. Suckleyi, Baird, M. N. A. t. 7. 
Se. mollipilosus, Aud. & Bach. Q. N. A. t. 19. 
?Sce. Fremontii, Aud. & Bach. Q. N A. t. 149.f. 1; Baird, M. N. A. 272, t. 6, 
Fur rusty and black mixed, beneath clear bright buff; tail 
dull chestnut centrally, darker above, then black and margined 
all round with rusty white; hairs of the tail black, except at 
their extremities. 
Hab. California (Douglas, Gray, type in B.M.). Vancouver 
Island, 2 , dark brown (November, J. K. Lord, B.M.). Cascade 
Mountains (J. K. Lord, B.M.). British Columbia, edge of the 
Prairie (J. K. Lord, B.M., young). 
Var. Fremontii. Paler, beneath reddish white; feet reddish 
brown, rather larger. 
?Sciurus Fremontii, Aud. & Bach. Q. N. A.t. 149. f.1; S. Baird, M. N. 
A. 272, t. 6. 
Hab. Scott Mountains, Trinity Country, 500 or 600 feet 
above the sea-level (Brydges). B.M. Called Pine-Squirrel. 
*** Lateral streak none; belly red. 
6. Sciurus hyporrhodus. 
Sciurus estuans, Gray, List. Mamm. B. M. 
Fur very soft, abundant and long, above reddish olive, mi- 
nutely puuctulated with bay and black; hairs lead-coloured, 
with short yellow ends and a narrow subterminal black band ; 
side of nose, cheeks, chin, throat, underside of the body, and 
inner side of the limbs red bay; hair black at the base, with 
red ends: tail black, indistinctly yellow-ringed, reddish- washed ; 
hairs yellow, with three black bands, the upper broadest, and a 
reddish tip. 
Hab. Santa Fé de Bogota. 
Known from all the other South-American squirrels by the 
softness and length of the hair and hairy ears. 
3. Macroxus. 
Gray, Ann. & Mag. Nat. Hist. 1867, xx. pp. 271, 275. 
Ears generally have a small tuft of short woolly hairs at the 
outer hinder part of the base. This is not to be observed in M. 
estuans. Soles of the feet generally bald; but some of the 
northern species have the soles covered with short hair, except 
on the long pad on the inner edge, and near and on the pads at 
the bases of the toes. : 
The species may be divided geographically as those found 
north or south of the Gulf of Panama: the northern species 
