XV. 

 Northern or Canadian Flying-squirrel. 



Sciuropterus sabrinus (Shaw). 



(Gr. Skiouros, a squirrel; pteron a wing; L. sabrinus, of Severn River.) 



Sciurus sabrinus Shaw, i8oi, Gen. Zool,, II, p. 157. 

 Sciuropterus sabrinus Bangs, 1896, Proc. Biol. Soc. Wash., X, 



p. 162. 



Type Locality. — Severn River, Keewatin, Canada. 



French Canadian, VAsapan; le Polatouche; VEcu- 



reuil volant. 

 Cree, Sha-ka-skan'-da-way-o. 

 OjiB. & Saut., Sha-ka-skan'-da-way ( = flying 



downward). 

 Chipewyan, .? Thee-chin Nok-ky'-ay. 

 Yankton Sioux, Poh-kahn. 

 Ogallala Sioux, Psin'-cha. 



The genus Sciuropterus (F. Cuvier, 1825) comprises noc- 

 turnal squirrel-like animals, with large eyes and ears, clad in 

 very soft velvety fur, with tail flattened, and with a flying mem- 

 brane between the legs on each side, supported and enlarged by 

 a spur developed from the pisiform bone; the teeth are: 



I— I 2—2 ^— ^ 



Inc. ; prem. ; mol. ^-^ =22 



i-i i-i ^-^ 



In addition to the generic characters the Canadian Flying- 

 squirrel has: 



Length, 12 inches (305 mm.); tail, 6 inches (152 mm.); size 

 hind-foot, i| inches (38 mm.). 



Its general colour above is soft fawn-brown, much broken colour 

 with the lead-coloured under-fur showing through, especially 

 on the upper side of the wings. Toward the edge of these flaps 



437 



