136 TAMIAS. 



98. obscurus (Tamias), Allen, Bull. Am. Mus. Nat. Hist., 1890, 



p. 70. 

 LOWER CALIFORNIA CHIPMUNK. 



Type locality. San Pedro Martir Mountains, Lower California, 

 Mexico. 



Geogr. Distr. San Pedro Martir and Hanson Laguna Mountains, 

 Lower California, Mexico. 



Genl. Char. Size small; pelage soft, color dark. 



Color. Post-breeding Pelage. Above dark brownish gray ; five 

 indistinct dorsal stripes dull chestnut, posterior half of median one 

 blackish; intermediate light stripes whitish gray; central portion of 

 flanks yellowish brown; shoulders, arms, thighs, and legs like upper 

 parts ; top of head blackish gray ; ears similar, with large white 

 patches at base; sides of face whitish, with three chestnut stripes 

 from nose to ears; under parts whitish; tail above black or dark 

 brown washed with black, beneath rufous edged with black and with 

 white hairs intermingled; hands like arms; feet buffy or brownish 

 gray. 



Winter Pelage. Dull; light stripes on dorsal region very faint, 

 almost obsolete; dark stripes also faintly perceptible; upper parts 

 iron gray tinged with brown, with the light gray stripes, and darker 

 brown ones faintly indicated; middle of sides fulvous; top of head 

 like back; two white stripes on sides of face, one from tip of nose 

 over and beyond eye, the other from beneath eye to base of ear; 

 shoulders and sides like back; upper parts of arms and hands, legs 

 and feet pale brownish or brownish gray; under parts white, plum- 

 beous of under fur showing through; tail above black, beneath in 

 center dark rufous, bordered with black and edged with yellowish 

 white; anal region very dark rufous. 



Measurements. Total length, 230; tail vertebrae, 80-103; hind 

 foot, 32-34. Skull: occipito-nasal length, 37; Hensel, 16; zygomatic 

 width, 20; interorbital width, 8; palatal length, 15.5; length of upper 

 molar series, 5.5. 



99. bulleri (Tamias), Allen, Bull. Amer. Mus. Nat. Hist., 1889, 



P- 173- 

 MEXICAN CHIPMUNK. 



Type locality. Sierra de Valparaiso, State of Zacatecas, Mexico. 



Geogr. Distr. State of Zacatecas, Mexico. 



Genl. Char. Similar to T. mcrriami. Ears tricolor; black patch 

 between eye and ear. 



Color. Upper parts and sides pale gray tinged with buff; five 

 dark dorsal stripes, three distinct, the three median ones seal brown 



