MAMMALS OF THE MEXICAN BOUNDARY. 303 



AMMOSPERMOPHILUS HARRISII (Audubon and Bachman). 

 HARRIS GROTJND-SaUIRREL. 



Spermop]nlus harrisii AvDVBOti and Bachman, Quad. N. Aid., Ill, 1857, p. 267, 

 pi. cxLiv, fig. 1 (original descTiptiori and figure). — Baird, Mam. N. Am., 

 1857, pi. XLViii, fig. 3 (skull).— CouEH, Amer. Nat., I, 18fi7, p. 359 (Western 

 Arizona). — Miller and REHN,'Proc. Bost. Soc. Nat. Hist., XXX, No. 1, Dec. 

 27, 1901, p. 51 (Syst. Results Study N. Am. Mam. to close of 1900). 



Tamias harrisi, Allen, Monogr. N. Am. Rodentia, 1877, p. 810. — True, Proc. 

 U. S. Nat. Mus., VII, 1885, p. 594. 



[Sperinophilusi harri.vi, Elliot, Field Col. Mus., Zool. Ser., II, 1901, p. 85 (Synop. 

 Mam. N. Am.). 



[Citeliits {Ammosperiiiopliilits)] harrisi, Elliot, Field Col. Mus., Zool. Her., IV, 

 1904, p. 141 (Mam. Mid. Am.). 

 Yfmg-yV-uh of the llopi Indians of northeastern Arizona. 

 Htm-me'-dd of the Hualapai Indians of northern Arizona. 



Type-locality. — United States; exact locality unknown.^ 



Geographical ra/nge. — Sonoran Zone of the central region. On the 

 Mexican Border, the typical form occurs only in the central portion 

 of the Arizona section of the Boundary Line, whence its range extends 

 northward beyond the Colorado River. In the desert ranges border- 

 ing- the lower Colorado River it is represented by the subspecies 

 ^axicola. 



Description. — Similar in size and color pattern to Ammospe7viio- 

 pJiHuH leiiciiinis, but with a stronger coloration and a longer tail, 

 which IS not white below. Length 230 mm.; tail vertebn^?, 80; hind 

 foot, 40; head, 45. Skull, 40 by 23. Mamma?, 5 pairs. Color above, 

 a much-grizzled mixture of black and vinaceous-cinnamon. Outer 

 surface of limbs, vinaceous-cmnamon. minutely grizzled. Under sur- 

 face and orbital circle, white. A white stripe on each side extends 

 from above the shoulder to the rump. Feet pale rusty. Tail rather 

 bushy, iron gray above and below, 



HaJnts and local diMribution. — The Harris ground-stiuirrel is an 

 abundant inhabitant of the open plains and de.sert regions of Arizona, 

 and also invades the valleys, canyons, and river bottoms. Jt is the 

 characteristic ground squirrel of Arizona, which territory is its cen- 

 ter of abundance. Its range extends to all the surrounding country, 

 the outline of its habitat lying within the l)Ouiidaiies of California, 

 Nevada, Utah, New Mexico, and Mexico. In Arizona, it is restricted 

 to the warm country under 5,200 feet in altitude, its vertical range 

 corresponding, above, to the belt of cedar forests, although in certain 

 instances it possibly extends through the cedars into the zone of 

 rough-barked junipers which precedes the pine; but I have never met 

 with it so high up. With the above definition of its range, it is 

 unnecessary to enumerate the localities in which it has been found. 



«See Merriam, North American Fauna, No. 2, Oct. 30, 1889, pp. 19, 20. 



