422 Dr.J.E. Gray’s Synopsis of the American Squirrels 
Var. 3. Under surface white; ear-tuft white or yellow; feet 
grey, black- and white-punctulated. 
Sciurus Colliei, Richardson, /. c. 
Hab. California (Richardson, type in B.M.). Guatemala, West 
Coast (O. Salvin): B.M. Mexico: B.M. 
Var. 4. Under surface pure white; ear-tuft large, red; feet 
black (not punctulated). 
Hab. Mexico, province of “‘ Amoa” (Amoea ?). 
8. Macroxus dorsalis. 
Sciurus dorsalis, Gray, P. Z. S. 1848, p. 138, t. 7. 
Black ; crown, sides of neck, and body and limbs white; ear- 
spot large, white ; chin, throat, sides of neck, underside of body, 
and inner side of limbs white, yellow-white, or reddish brown ; 
hair black ; fur white- or yellow-varied, with a white tip. 
Hab. Costa Rica. 
Var. 1. Sides and underside pure white. 
Hab. North America, Nicaragua. 
Var. 2. Underside yellowish white; chin’ and throat white, 
sides white, black-varied. 
Hab. Santa Fé, Veragua (O. Salvin). B.M. 
Var. 3. Underside and chin, cheeks, sides of body, and limbs 
pale yellow. 
Var. 4. Back more or less brown-varied, especially behind ; 
outer sides of legs reddish-washed ; cheek, throat, and sides of 
the body white-varied ; chest, belly, and inner sides of limbs 
rufous. 
Hab. Costa Rica, Nicoya (O. Salvin). B.M. 
Var. 5. Like var. 3; but the lower part of the sides of the 
body with a broad, reddish, black-and-white-dotted streak (like 
the outer sides of the limbs) under the white on the sides of the 
body; chest with a short white central streak, and the circum- 
ference of the teats grey. 
Hab. Costa Rica, Nicoya (O. Salvin). B.M. 
Var. 6. Head, sides, limbs, feet, and beneath uniform rufous; 
middle of the back black; tail black, with white tips to the 
hairs. 
Hab. Nicoya? (QO. Salvin). B.M. 
There is a young specimen in the British Museum, said to 
come from Honduras, which is like the adult; but the fur is 
black by the length of the black tips to the hairs ; the tailis © | 
blaek, white-washed, with long white tips to the hairs. 
