^' SPECIES OP MAMMALIA. 



North American species of Squirrels ; S. Ruber (not War- 

 den,) S. Felenus, S. Pliaiopus, S. Melanotus, S. Lateralis. 



Pteromys. Dentition similar to that of genus Sciuru^^ 

 Head round ; ears round ; eyes large ; anterior feet with four 

 elongated toes, furnished with compressed sharp talons, with 

 the rudiment of a thumb, having an obtuse nail; posterior 

 feet with five long toes, much divided, and fitted for seizing ; 

 tail long, villose : skin of the sides extended from the anterior 

 to the posterior extremities, forming a sort of parachute. 



^15. 1. P. Sibiricus (Common Flying Squirrel, or Pola- 

 touch.) Ashy-gray above ; white underneath ; tail half 

 the length of the body ; about seven inches long. 



Mus Ponticus, aut Scythicus Volans, Gesner. Sciurus 

 Volans, Lin. Faun. Suec. i. 13. 



Ecureuil Volant de Sibere, Briss. Reg. Anim. 159. Eu- 

 ropean Flying Squirrel, Pen. Quad. 155. Common Flying 

 Squirrel, Shaw, Zool. ii. p. 1, 151. Polatouche Sapan, 

 Desm. Nouv. Diet. d'Hist. Nat. t. 27, 404, and Pteromys 

 Sibiricus, eju^d. Ency. Method. Mammalogie, sp. 553. 



Icon. Schreb. tab. 223. Shaw, I. c. tab. 149. 



Inhabits Finland, Lapland, S^c, in Europe and in Siberia. 



Type of F. Cuvier's genus Sciuropterus. 



673. 2. P. Volucella (Assapan.) Grayish-brown above ; 

 white underneath ; tail nearly as long as the body ; body 

 about five inches long. 



Sciurus Volucella, Pallas, Glires, 353. 



Polatouche, Buff", t. 10. Flying Squirrel, Catesby, Caro- 

 lina, II. Assapan, F. Cuvier, Mam. Lit hog. 



Icon. Schreber, tab. 222. Bu/f. I. c. tab. 41. Catcsbi/, 

 Carolina, pi. 1^. Edwards, Birds, pi. \^\. Ency. Method, 

 t. 11, f. 4. F. Cuv. Mam. Lithog. 



Inhabits Canada and the United States. 



259 



