72 MOTOMA. 



Neotoma albigula warreni Merriam. 



\K>li>nni aihi^ula icarreni Mcrr., Proc. Biol. vSoc. Wash., XXI, 

 1908, p. 14,}. 



l*yf>e Ideality. Gaumcs Ranch, Baca County (northwest corner). 

 Colorado. Altitude 4,600 feet. 



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

 'astern New Mexico, Upper Sonoran Zone. 



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

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

 wider anteriorly; zygomatic arch more spreading; bulla? smaller. 



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

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

 white. Ex type in United States National Museum. 



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

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

 intertcmporal 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 za'catecce Goldm., Proc. Biol. Soc. Wash., XVIII, 

 1905, p. 30. 



Neotoma albigula zacateca 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 X. leucodon but darker, skull across ante- 

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

 incisors smaller. 



Color. Entire upperparts pale cinnamon; checks 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; Henscl, 38.7; zygomatic widtb 

 (broken); intertemporal width, 9.3; length of nasals, 1 6.6; length of 

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

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



Neotoma albigula seri Townsend. 



\eolomd albiguln seri Towns., Bull. Am. Mus. Nat. Hist.. XXXI, 

 KM. \ p. [25. 



