334 BULLETIN 19, UNITED STATES NATIONAL MUSEUM. 



t*Sciurus aberti ferreus True. 



1894. Sciurus aberti concolor True, Diagnoses of new North 

 American mammals, p. 1. April 26, 1894. (Reprint: Proc. 

 U. S. Nat. Mus., vol. 17, p. 241. November 15, 1894.) Not of 

 Blyth, 1855. 



1900. [Sciurus aberti] ferreus True, Proc. Biol. Soc. Washing- 

 ton, vol. 13, p. 183. November 30, 1900. (Substitute for 

 concolor True.) 



Type Locality. — Loveland, Larimer County, Colorado. 



t*Sciurus aberti mimus Merriam. 



1904. Sciurus aberti mimus Merriam, Proc. Biol. Soc. Washing- 

 ton, vol. 17, p. 130. June 9, 1904. 



Type Locality. — Hall Peak, at south end of Cimarron Mountains, 

 Mora County, New Mexico. 



Sciurus aberti phseurus Allen. 



1904. Sciurus aberti pJiseurus Allen, Bull. Amer. Mus. Nat. 



Hist., vol. 20, p. 205. May 28, 1904. 

 Type Locality. — La Cienega, northwest Durango, Mexico. 



t*Sciurus kaibabensis Merriam. 



1904. Sciurus Icaibabensis 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. 49. 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, 



State of 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 Guerlinguetus Gray.' 



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



April, 1821. Type, Sciurus guerlinguetus Ghay = Sciurus 



sesiuans Linnaeus . 

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



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

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



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



> Revised by Nelson, under the names Parasciurus, Arxosciurus, and Guerlinguetus, Proc. Wasliington 

 Acad. Sci., vol. 1, pp. 8&-101, May 9, 1899. 



