422 Dr. J. E. Gray's Synopsis of the American Squirrels 



Var. 3. Under surface white ; eai'-tuft white or yellow ; feet 

 grey, black- and white-pun ctulated. 



Sciurus CoUicei, Richardson, I, c. 



Hah. California (Richardson, type in B.M.). Guatemala, West 

 Coast (0. 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?). 



3. 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 Bica. 



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 Fe, Veragua (0. 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 Bica, Nicoya (0. 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 (0. 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. 



i/fl6. Nicoya? (0. 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 tail is 

 black, white-washed, with long white tips to the hairs. 



