Philadelphia, p. 333, April, 1855. (Type from Charco
Escondido, Tamaulipas, Mexico.)

_Specimens examined_, 2 from 7 km. S and 2 km. W San
Fernando.

~Neotoma angustapalata~ new species

Tamaulipan Wood Rat

_Type._--Male, subadult, skin and skull; No. 36976, Univ.
Kansas Mus. Nat. Hist.; 70 km. [by highway] S Ciudad
Victoria and 6 km. W of the [Pan-American] highway [at El
Carrizo], Tamaulipas, Mexico; 14 January 1950; obtained by
William J. Schaldach, Jr., original no. 578.

_Range._--Known only from the type locality; probably found
in other localities along the humid, east face of the Sierra
Madre Oriental in Tamaulipas.

_Diagnosis._--Size large (see measurements); upper parts
dusky brown, paler on sides, individual hairs on middle of
back tipped with black or with Light Pinkish Cinnamon
(capitalized color term after Ridgway, Color Standards and
Color Nomenclature, Washington, D. C., 1912); head grayer
especially on cheeks; underparts dusky (dark bases of
white-tipped hairs exposed), hairs on throat and inguinal
region of adult specimen white to base; outside of legs
dusky gray; tail scaly in appearance and sparsely covered
with short, blackish hairs above and short, whitish hairs
below; skull with auditory bulla large; external auditory
meatus large; palatine region narrow; sides of
interpterygoid fossa concave and broadly excavated near
posterior end of molariform tooth-rows.

_Comparison._--_Neotoma angustapalata_ has been compared
with _N. torquata_ (specimens from Veracruz and Puebla), _N.
navus_ (Coahuila), _N. mexicana_ (New Mexico), _N. micropus_
(Tamaulipas), _N. albigula_ (Coahuila), _N. ferruginea_
(Jalisco), and _N. distincta_ (from published description in
Goldman, N. Amer. Fauna, 31:64, October 19, 1910). _Neotoma
angustapalata_ differs from _N. micropus_ and _N. albigula_
in having a deep, instead of a shallow, anterointernal
reentrant angle on the first upper molar and seems to belong
to the _N. mexicana_ group of wood rats. _Neotoma
angustapalata_ differs from _N. navus_, _N. mexicana_, _N.
torquata_, and _N. ferruginea_ in larger size, darker
underparts, tail with sparse, short hairs and scaly
appearance, more broadly concave sides of interpterygoid
fossa at posterior end of molariform