The Recent Mammals Of Tamaulipas, Mexico Part 22

1901. _Reithrodontomys griseoflavus_ Merriam, Proc.

Washington Acad. Sci., 3:553, November 29, type from Ameca, 4000 ft., Jalisco.

1952. _Reithrodontomys fulvescens griseoflavus_, Hooper, Miscl. Publ. Mus. Zool., Univ. Michigan, 77:98, January 16.

_Distribution in Tamaulipas._--Known only from Jaumave.

Only specimens from Jaumave are clearly _R. f. griseoflavus_; all others east of this locality are intergrades between _griseoflavus_ and _tropicalis_, under which latter subspecies they are included. In _griseoflavus_ the tail is longer in relation to the head and body, 141.2 (135-153) per cent, than in the other two subspecies that occur in Tamaulipas. The average weight of 14 males was 14 (12-16) grams.

_Record of occurrence._--Specimens examined, 15, from Jaumave, 2400 ft.

=Reithrodontomys fulvescens intermedius= J. A. Allen

1895. _Reithrodontomys mexica.n.u.s intermedius_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 7:136, May 21, type from Brownsville, Cameron Co., Texas.

1914. _Reithrodontomys fulvescens intermedius_, A. H.

Howell, N. Amer. Fauna, 36:47, June 5.

_Distribution in Tamaulipas._--Northern half of state.

No specimen of this subspecies has been examined. Jones and Anderson (1958:447) reported specimens from Rancho Pano Ayuctle as _R. f.

intermedius_, but here those same specimens are a.s.signed to _R. f.

tropicalis_. J. A. Allen (1891:223) recorded specimens from Santa Teresa as _Ochetodon mexica.n.u.s_. According to Hooper (1952:142) that name was used by Allen for _R. fulvescens_. Allen's specimens from Santa Teresa are here referred to _R. f. intermedius_ on geographic grounds.

_Records_ (Hooper, 1952:108): Camargo, 200 ft.; 20 mi. S Reynosa, Charco Escondido; Matamoros, 30 ft.; 7.5 mi. S Matamoros; 29 mi. S Cd. Victoria, 800 ft.; Hacienda Santa Engracia, 800 ft.; Santa Teresa (50 mi. SW Matamoros); Sierra San Carlos (El Mulato, Tamaulipeca, 1500 ft.).

=Reithrodontomys fulvescens tropicalis= Davis

1944. _Reithrodontomys fulvescens tropicalis_ Davis, Jour.

Mamm., 25:393, December 12, type from Boca del Rio, 8 km. S city of Veracruz, Veracruz.

_Distribution in Tamaulipas._--Tropical area in southeastern part of state.

Most of the specimens examined of _R. fulvescens_ are included in this subspecies, princ.i.p.ally because of their reddish coloration that is characteristic of _R. f. tropicalis_. According to the original description by Davis (1944:393) this subspecies is smaller than _griseoflavus_ and the posterior border of the incisive foramina terminate anterior to the plane of the molars. But, these characteristics are not found in any specimen examined from Tamaulipas and the average of external measurements is more than those given by Hooper (1952:109) for _tropicalis_. Of all specimens from Tamaulipas, those from the vicinity of Altamira and Tampico are most nearly typical of _tropicalis_. Weights of seven males and five females, from the Sierra de Tamaulipas, were, respectively, 13 (11-15), and 11 (9-14) grams.

_Records of occurrence._--Specimens examined, 51: Rancho Santa Rosa, 25 km. N, 13 km. W Cd. Victoria, 1; Cd.

Victoria, 3; Sierra de Tamaulipas, 10 mi. W, 2 mi. S Piedra, 1200 ft., 12; 2 km. W El Carrizo, 1; Ejido Santa Isabel, 2 km. W Pan-American Highway, 2000 ft., 14; Rancho Pano Ayuctle, 25 mi. N, 3 km. W El Mante, 300 ft., 4; Rancho Pano Ayuctle, 6 mi. N Gomez Farias, 300 ft., 4; 6 mi. N, 6 mi. W Altamira, 2; 1 mi. S Altamira, 3; 16 km. N Tampico, 3; 7 km.

N Tampico, 4.

Additional records: Hidalgo (Hooper, 1952:110); 5 mi. NE Gomez Farias, 1100 ft. (_ibid._); La Azteca, 5 km. NNE Gomez Farias (Goodwin, 1954:11); Gomez Farias (_ibid._); Antiguo Morelos (Hooper, 1952:110); 2 mi. W Tampico (Ingles, 1959:396).

=Reithrodontomys mexica.n.u.s mexica.n.u.s= (Saussure)

Mexican Harvest Mouse

1860. _R[eithrodon]. mexica.n.u.s_ Saussure, Revue et Mag.

Zool., Paris, ser. 2, 12:109, type from mountains of Veracruz; restricted to Mirador, Veracruz, by Hooper, Miscl.

Publ. Mus. Zool., Univ. Michigan, 77:140, January 16.

1914, _Reithrodontomys mexica.n.u.s mexica.n.u.s_, A. H. Howell, N. Amer. Fauna, 36:70, June 5. Not _Reithrodontomys mexica.n.u.s_ (Saussure), being instead of J. A. Allen, 1895:135, which in part equalled _Reithrodontomys fulvescens difficilis_.

_Distribution in Tamaulipas._--Known from two localities, but probably occurs in all tropical areas in south part of state.

As noted before, J. A. Allen (1891:223) reported specimens from Rancho Santa Rosa as _Ochetodon mexica.n.u.s_, but he used this name for the species now known as _R. fulvescens_.

The specimen examined, previously reported by Jones and Anderson (1958:447), represents the northernmost occurrence of the species.

_Records of occurrence._--One specimen examined from Rancho Pano Ayuctle, 6 mi. N Gomez Farias, 300 ft.

Additional record: Rancho del Cielo, 3500 ft. (Hooper, 1952:144).

=Peromyscus maniculatus blandus= Osgood

Deer Mouse

1904. _Peromyscus sonoriensis blandus_ Osgood, Proc. Biol.

Soc. Washington, 17:56, March 21, type from Escalon, Chihuahua.

1909. _Peromyscus maniculatus blandus_ Osgood, N. Amer.

Fauna, 28:84, April 17.

_Distribution in Tamaulipas._--Reported only from Miquihuana (Osgood, 1909:86).

=Peromyscus melanotis= J. A. Allen and Chapman

Black-eared Mouse

1897. _Peromyscus melanotis_ J. A. Allen and Chapman, Bull.

Amer. Mus. Nat. Hist., 9:203, June 16, type from Las Vigas, Veracruz.

_Distribution in Tamaulipas._--Known only from Miquihuana (Osgood, 1909:112).

=Peromyscus leucopus texa.n.u.s= (Woodhouse)

White-footed Mouse

1853. _Hesperomys texana_ Woodhouse, Proc. Acad. Nat. Sci.

Philadelphia, 6:242, type probably from vicinity of Mason, Mason Co., Texas.

1909. _Peromyscus leucopus texa.n.u.s_, Osgood, N. Amer. Fauna, 28:127, April 17.

_Distribution in Tamaulipas._--Over all of state.