CITELLUS. 141 



a." Shoulders black, spotted with ferru- PAGE 



gineous C. variegatus 148 



b." Shoulders mottled with black and white, 

 a/" Crown speckled with black and 



white, or brown, black, and white . .C. v. grammunts 149 



b/" Crown dark brown C. v. fisheri 150 



c." Shoulders black, crown black C. v. atricapillus 150 



d." Shoulders blackish brown and whitish; 



crown, sides, and nape of head black . . C. v. ruprcstris 150 



e." Shoulders grizzled grayish and black. . . .C. adocctus 152 

 b.' Tail annulated. 



a." Hind foot large C. ammlatus 151 



b." Hind foot small C. a. goldmani 151 



A. Ammospermophilus, Merr. 



Size small. Skull broad; interorbital constriction slight; nasals 

 short, broad, reaching posterior end of premaxillae; first premolar 

 less than half the second in size; tail, one-third the length of the 

 head and body. 



FIG. 24. CITELLUS <AMMOSPERMOPHILUSI L. PENINSUL/C. 



No. 4948 Am." Mus. Nat. Hist. Coll. Nat. size. 



103. harrisi (Spermophilus), Aud. & Bachm., Quadr. N. Am., in, 

 1854, p. 267, pi. 144, Fig. i. Elliot, Syn. N. Am. Mamm., 

 1901, p. 85. 



HARRIS'S SPERMOPHILE. 



Type locality. Not determined. 



