430 Dr.J.E.Gray’s Synopsis of the American Squirrels 
nose, cheeks, chin, and upper part of throat, and a small spot 
behind the ear pale grey; throat, chest, belly, and inner sides’ 
of the legs red; tail bushy, black, red-washed, with a black tip 
and black under surface; hairs of tail pale brown at the base, 
with a broad black ring and red tip. : 
Hab. Honduras, Venezuela (Dyson): B.M. Santa Fé de 
Bogota (Argent) : B.M. Mexico (Parzudaki): B.M. Isthmus of 
Panama (Salvin): B.M. Costa Rica, Volcan de Cartago: B.M. 
Var. Middle of the back black; spot behind the ears yellow 
on one side and grey on the other. 
23. Macroxus Gerrardii. 
Sciurus Gerrardii, Gray, P. Z. S. 1861, p. 92, t. 16. 
Crown, back, rump, thighs, and base of tail dark, black- and 
yellow-grizzled; cheeks, chin, sides of neck and body, fore legs 
and front of thighs, and middle portion of the tail bright red- 
bay ; middle of throat, chest and belly, and inner side of thighs 
pure white. 
Hab. New Granada. Gray’s type in B.M. 
C. Tail black, grey-washed, or more or less annulated. 
24, Macroxus leucogaster. 
“* Sciurus guerlingus, Castelnau,” not Shaw. 
Fur soft, full, dark olive, very closely and regularly punctu- 
lated with yellow ; hairs lead-coloured, upper half yellow, with a 
subterminal black band and yellow tip ; ; sides of nose and head 
grey, yellow-washed ; chin, throat, underside of body, and inner 
side of limbs white; hairs white to the base: tail olive, under- 
side black- and yellow- ringed on the hinder half; hairs elongate, 
yellowish, with a narrow central and very broad subterminal 
black ring, with a long grey or yellowish tip. 
Hab. South America, Bolivia, Santa Cruz de la Sterna es 
B.M., 1846, 1847. Brazil (Castelnau) : B.M. 
The female has six teats, far apart and nearly equidistant. 
25. Macroxus Fraseri. 
Fur black, reddish-washed ; head, ears, feet, and tail black ; 
upper part of the nose slightly varied with white hairs ; hairs 
black, with reddish tips ; hairs of the front of the back, shoulders, 
and outer side of the fore legs black, with a reddish-grey, narrow, 
subterminal band ; cheeks, throat, ‘and inner sides of limbs pale 
red brown; chest and belly rufous, with grey rings; hairs lead- 
coloured, with a red-brown tip or subterminal ring; hairs of 
tail black, with some intermixed grey ones, of the base of the © 
tail black) with red ends. 
