Three specimens are assigned to this species on the basis of the breadth of M1. In comparison with skulls from the type locality, those of Tamaulipan specimens are slightly smaller and narrower.
Measurements.—Some cranial measurements of a male adult (old) from ten miles west and two miles south of Piedra are: condylobasal length, 79.0; zygomatic breadth, 52.3; postorbital constriction, 22.0; mastoid breadth, 44.2; length of maxillary tooth-row, 24.4; breadth of M1, 9.3.
Records of occurrence.—Specimens examined, 2: La Pesca, 1; Ejido Eslabones, 10 mi. W, 2 mi. S Piedra, 1200 ft., 1.
Additional record: Near El Mulato (Dice, 1937:250).
Felis concolor stanleyana Goldman
Puma
1938. Felis concolor stanleyana Goldman, Proc. Biol. Soc. Washington, 51:63, March 18 (renaming of F. c. youngi Goldman, Proc. Biol. Soc. Washington, 49:137, August 22, type from Bruni Ranch, near Bruni, Webb Co., Texas).
Distribution in Tamaulipas.—Restricted to mountains of state.
The two specimens examined are skulls only, which were picked up in the field. In general the measurements are like those given by Goldman (1946:233) for the males of Felis concolor stanleyana. But the skull from Miquihuana yielded measurements that suggest intergradation between F. c. stanleyana and F. c. azteca of the western mountains of Tamaulipas.
Measurements.—Two skulls, one from Miquihuana and the second from 9-1/2 mi. SW Padilla, yield measurements as follows: greatest length, 214.0, 213.0; condylobasal length, 195.0, 190.0; zygomatic breadth, 146.0, 140.1; height of skull (frontals to palate), 70.0, 72.4; interorbital constriction, 41.6, 41.4; breadth of nasals (at posterior union between premaxilla and maxilla), 20.1, 17.9; length of maxillary tooth-row, 62.7, 63.3; crown length of P3, 23.3, ——; breadth of P3, 11.9, 12.2; anteroposterior diameter of upper canine, 15.1, 15.3.
Records of occurrence.—Specimens examined, 2: 9-1/2 mi. SW Padilla, 800 ft., 1; Miquihuana, 6400 ft., 1.