RODENTIA SCIURINAE SCIURUS CAROLINENSIS. 



List of Specimens. (Black and dusky squirrels, or not pure white beneath.} 



263 



1 Uniformly black all over, with white tuft at the end of the tail. 



Uniformly black all over, without white tuft. 



s Uniformly black above ; annulated dusky beneath. 



* Nearly uniform black, but with some annuli above and below. 



6 Dusky all over, and considerably annulated. 



6 Grayish above ; annulated with rusty beneath in places. 



SCIUKUS CAKOLINENSIS ? ? 



Mexican Gray Squirrel* 



have before me two skins of gray squirrels from Santa Catarina, in Mexico, which differ 

 a >reciably from any I have seen from within the United States. They are smaller than the 

 sathern gray, with longer and perhaps more bushy tail, and shorter and broader feet. The 

 h r is coarser ; above, more decidedly black and gray ; beneath, very pure white, without any 

 iilication of the rusty line margining the white of the belly, which I have never found wanting 

 b ore. The hairs of the tail are coarser ; the exterior white, very opaque, and of a yellowish 

 tige, instead of the bluish white of the common gray. The ears show no trace whatever of 

 M.ite on their convexity. 



' Although this locality is very different from the usually recorded range of the gray squirrel, 

 a>l the differences of these specimens are quite appreciable, I do not feel at liberty to establish 

 t~ >m as distinct species, without further materials. 



The skull of this species presents some quite striking characteristics. In the first place, the 

 &iall anterior upper molar, so universal in the gray squirrel, is here wanting entirely, as in 

 tju fox squirrels. The zygoma extends further backward, though the muzzle is shorter and 



