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



Var. 1. Blackish, very minutely puuctulated with white ; hairs 

 lead-coloured at the base, brown above, with a narrow black 

 subterminal band and white tip; crown blacker; underside 

 reddish grey, slightly grizzled; tail black (or brown), haii-s 

 black or brown, with slender white tips to some. North America. 

 B.M. 



Var. 2. Hairs black, with a very small narrow subterminal grey 

 ring. B.M. 



Var. 3. Hairs black, shining, uniform. B.M. 



II. Middle-sized ; fur soft. 

 * Lateral streak lead-coloured ; tail narroio, shorter than the body. 



3. Sciurus hudsonius. 



Sciurus hudsonius, Pallas, Baird, M. N. A. 269, t. 46. f. 2. 



So. caroUnus, Ord. 



So. rubrolineatus, Desm. 



Tamias rubrolineatus, Schinz. 



Tamia hudsonia, Lesson. 



Fur black and greyish rusty ; back often washed with ferru- 

 ginous; tail beneath and towards the tip uniform ferruginous, 

 with roots of the hairs not annulated. 



Carlton House (male, large) : B.M. Fort Simpson, Mackenzie 

 River (Ross) : B.M. 



See Sciurus Fremontii, Aud. &Bach. Q. N. A. iii. 237, t. 149. 

 f. 1. " Fur above black and greyish rusty yellow, without any 

 tinge of ferruginous ; tail black or greyish white, without any 

 ferruginous visible externally, glossy black near the tip.^' (S. 

 Baird, M. N. A. 246, 272.) Rocky Mountains, Sawach Pass. 

 Mus. Smithsonian Institution. 



4. Sciurus Richardsonii. 



Sciurus Richardsonii, Aud. & Bach. Q. N. A. t. 5 ; Baird, M. N. A. 273. 

 ?-Sc. lanuginosus, Aud. & Bach. Q. N. A. t. 25 (immature). 

 Sc. hudsonius (part.), J. K. Lord, Report. 



" Fur reddish brown and black finely mixed ; back not washed 

 with ferruginous, beneath white ; tail dark reddish brown to- 

 ward the base of the hairs, the exterior portion of the sides and 

 entire tip glossy black." 



Hab. Vancouver Island (J. K. Lord) : B.M. Cascade Moun- 

 tains (J. K. Lord) : B.M. West Slope, Rocky Mountains (J. K. 

 Lord) : B.M. 



** Lateral streak black ; underside rusty or reddish. 



5. Sciurus Douglasii. 



Sciurus Douglasii, Gray, P. Z. S. 1836, p. 88; Aud. & Bacli.Q. N.A. ii. t. 48 ; 

 Baird, M. N. A. 275, t. 20. f. 1, t. 45. f. 2. 



