Records of occurrence.—Specimens examined, 7: Sierra de Tamaulipas, 10 mi. W, 2 mi. S Piedra, 1200 ft., 5; Rancho Pano Ayuctle, 25 mi. N El Mante, 3 km. W Pan-American Highway, 2200 ft., 1; 2 km. W El Carrizo, 1.
Additional records: Sierra San Carlos (San José, El Mulato) (Dice, 1937:249); Soto la Marina (Goldman, 1942:81); Cd. Victoria (ibid.); 10 mi. NE Zamorina (Hooper, 1953:3); 3 mi. NW Acuña (ibid.); 19 km. SW Mante (Davis, 1944:381).
Potos flavus aztecus Thomas
Kinkajou
1902. Potos flavus aztecus Thomas, Ann. Mag. Nat. Hist., ser. 7, 9:268, April, type from Atoyac, Veracruz.
Distribution in Tamaulipas.—Uncertain; one specimen was seen by Leopold (1959:437) near Acuña.
Mustela frenata
Long-tailed Weasel
This species occurs in practically all of the state, but as in most other areas actual records are few; only two specimens, both males, have been examined. One was taken at Jaumave, in a steel-trap baited with fresh egg. It weighed 325 grams. The other was taken in the vicinity of Altamira and weighed 434 grams.
Two subspecies have been reported from Tamaulipas; Mustela frenata frenata that occurs in the central and northern parts of the state and M. f. tropicalis that occurs in the tropical area in the southern part of the state.
Mustela frenata frenata Lichtenstein
1831. Mustela frenata Lichtenstein, Darstellung neuer oder wenig bekannter Säugethiere ..., pl. 42 and corresponding text, unpaged, type from Ciudad México, México.