72 NEOTOMA. 



Neotoma albigula warreni Merriam. 



Neotoma albigula warreni Merr., Proc. Biol. Soc. Wash., XXI r 

 1908, p. 143. 



Type locality. Gaumes Ranch, Baca County (northwest corner) r 

 Colorado. Altitude 4,600 feet. 



Geogr. Distr. Plains region of southeastern Colorado, and north- 

 eastern New Mexico, Upper Sonoran Zone. 



Genl. Char. Skull compared with that of N. albigula, its nearest 

 relative, is shorter and broader; rostrum more swollen; nasals broader f 

 wider anteriorly; zygomatic arch more spreading; bullae smaller. 



Color. Upperparts gray, darkest on lower back; cheeks gray; 

 underparts white; tail above black, beneath white; hands and feet 

 white. Ex type in United States National Museum. 



Measurements. Total length, 324; tail, 137; hind foot, 36. Skull: 

 Occipito-nasal length, 43.5; Hensel, 36.2; zygomatic width, 23.4; 

 intertemporal width, 5.7; length of nasals, 17.6; palatal length, 8; 

 length of upper molar series, 8.4; length of mandible, 23.2; length of 

 lower molar series, 8.7. Ex type in United States National Museum. 



Neotoma albigula zacatecae Goldman. 



Neotoma leucodon zacatecce Goldm., Proc. Biol. Soc. Wash., XVIII, 

 1905, p. 30. 



Neotoma albigula zacatecce Goldm., N. Am. Fauna, 1910, No. 31,. 

 1910, p. 38. 



Type locality. Plateado, Zacatecas, Mexico. Altitude 7000 feet. 



Geogr. Distr. Sierra Madre in western Zacatecas, Mexico, Transi- 

 tion Zone. 



Genl. Char. Similar to N. leucodon but darker, skull across ante- 

 rior roots of zygomata more arched; rostrum more decurved; upper 

 incisors smaller. 



Color. Entire upperparts pale cinnamon; cheeks and sides paler; 

 dorsal line darker, hairs black- tipped ; rump reddish; upper lip dusky; 

 chest and inguinal region pure white; rest of underparts creamy white; 

 tail above brownish black, beneath white; hands and feet white. Ex 

 type in United States National Museum. 



Measurements. Total length, 358; tail, 162; hind foot, 37. 

 Skull: Occipito-nasal length, 45.3; Hensel, 38.7; zygomatic width 

 (broken); intertemporal width, 9.3; length of nasals, 16.6; length of 

 upper molar series, 9; length of mandible, 23.7; length of lower molar 

 series, 8.7. Ex type in United States National Museum. 



Neotoma albigula seri Townsend. 



Neotoma albigula seri Towns., Bull. Am. Mus. Nat. Hist., XXXI f 

 1912, p. 125. 



