278 Zoological Society. 



search of food to proceed to the extremity of a limb, it moves cau- 

 tiously and heavily, and returns the same way. On the ground it 

 runs clumsily and makes slower progress thag the Gray Squirrel. 

 It is usually fat, especially in autumn, and the flesh is said to be 

 preferable to that of any other of our species. 



" The Cat Squirrel does not appear to be migratory in its habits. 

 The same pair, if undisturbed, may be found taking up their resi- 

 dence in a particular vicinity for a number of years in succession, 

 and the sexes seem mated for life." 



Sciurus leucotis. Northern Gray Squirrel. 



Gray Squirrel. Penn. Arct. Zool. vol. i. p. 135. Hist. Quad. 

 No. 272. 



Sci. Carolinensis. Godman non Gmel. 



Sci. leucotis. Gapper, Zoological Journal, vol. v. p. 206, pub- 

 lished in 1830. 



Larger than the Carolina Gray Squirrel j tail much longer than 

 the body ; smaller than the Cat Squirrel ; subject to many varieties 

 of colour. 



Dental formula, incis. -%, mol. -^, = 22. 



Sciurus Carolinensis, Gmel. Little Carolina Gray Squirrel. 



This species is smaller than the Northern Gray Squirrel, and has 

 the tail, which is the same length as its body, narrower than in that 

 species. The colour above is rust)' - gray, beneath white, and not 

 subject to variation. 



Sciurus Collicei. For a description of this species, of which the 

 original specimen is in the Collection of the Zoological Society, 

 Dr. Bachman refers to Dr. Richardson's Appendix to Capt. Beechey's 

 Voyage. 



Sciurus nigrescens. A species described by Mr. Bennett, in the 

 Proceedings of the Zool. Soc. for 1833, p. 41. 



Sciurus niger, Linn, non Catesby. The Black Squirrel. 



A little larger than the Northern Gray Squirrel ; fur soft and 

 glossy. Ears, nose, and the whole body, pure black ; a few white 

 tufts of hair interspersed. Incis. ^, canines ^, molars ^, = 20. 

 Sciurus Auduboni. Larger Louisiana Black Squirrel. 



Sciurus corpore supra nigro, subtiis fuscescente ; caudd corpus lon- 

 gitudine aquante. 



A new species, for which Dr. Bachman is indebted to Mr. Audu- 

 bon. It has the fur very harsh to the touch, and is rather less in 

 size than the Sciurus niger. 

 Sciurus fuliginosus. Sooty Squirrel. 



Sciurus corpore supra nigro et fuscescenti-flavo irrorato, suhtns 



