NORTH AMERICAN RECENT MAMMALS. 225 



t*Sciurus kaibabensis Merriam. 



1904. Sciurus Tcaibabensis Merriam, Proc. Biol. Soc. Washing- 

 ton, vol. 17, p. 129. June 9, 1904. 

 Type Locality. — Bright Angel Creek, top of Kaibab Plateau, 

 north side of Grand Canyon of Colorado, Coconino County, 

 Arizona. 



*Sciurus durangi (Thomas). 



1893. Sciurus aberti durangi Thomas, Ann. and Mag. Nat. Hist., 



ser. 6, vol. 11, p. 50. January, 1893. 

 1899. Sciurus durangi Nelson, Proc. Washington Acad. Sci., 



vol. 1, p. 85. May 9, 1899. 

 Type Locality. — Ciudad ranch, 100 miles west of Durango City, 



Durango, Mexico. 

 Range. — Pine forests of transition and lower border of boreal 



zones in Sierra Madre, western Durango and Chihuahua, 



Mexico. Altitude, 7,000 to 11,000 feet. 



Subgenus GUERLINGUETtJS Gray.« 



1821. Guerlinguetus Gray, London Med. Repos., vol. 15, p. 304. 



April, 1821. Type, Sciurus guerlinguetus Gray = Sciurus 



sestuans Linn^us. 

 1880. Parasciurus Trouessart, Le naturaliste, vol. 2, p. 292. 



October, 1880. Type, Sciurus niger Linn^us. 

 1899. Arseosciurus Nelson, Proc. Washington Acad. Sci., vol. 1, 



p. 29. May 9, 1899. Type, Sciurus oculatus Peters. 

 1915. Mesosciurus Allen, Bull. Amer. Mus. Nat. Hist., vol. 34, 



p. 212. May 17, 1915. Type, Sciurus sestuans hoffmanni 



Peters. 

 1915. Histriosciurus Allen, Bull. Amer. Mus. Nat. Hist., vol. 



34, p. 213. May 17, 1915. Sciurus gerrardi Gray. 



*Sciurus niger '^ niger Linnseus. (Fox-squirrel.) 



1758. [Sciurus] niger Linn^us, Syst. Nat., ed. 10, vol. 1, p. 64. 

 1885. Sciurus niger niger True, Proc. U. S. Nat. Mus., vol. 7 



(1884), p. 595. 1885. (Part.) 

 Type Locality. — Probably southern South Carolina. (The 



name is based on Catesby's black fox squirrel.) 

 Range. — Florida and the southeastern States. 



«" Revised by Nelson (under the names Parasciurus, ArxosciurtLS, and Guerlinguetus, Proc. Washington 

 Acad. Sci., vol. 1, pp. 88-101, May 9, 1899. 



" Forms occurring in the United States revised by Osgood, Proc. Biol. Soc. Washington, vol. 20, pp. 

 45-46, Apr. 18, 1907. 



5750e— 24 16 



