1901. _Antilocapra americana mexicana_ Merriam, Proc. Biol.
Soc. Washington, 14:31, April 5, type from Sierra en Media,
Chihuahua.
_Distribution in Tamaulipas._--Originally in the northern
part of state; now absent from Tamaulipas.
_Antilocapra_ is here included on the basis of a skull recorded by
Baird (1858:669) from Matamoros. J. A. Allen (1881:184) doubted the
occurrence of this animal in Tamaulipas because Dr. Palmer found no
indications of the presence of _Antilocapra_ in any portion of the area
that he traversed, which apparently was only southern Tamaulipas.
I am sure that the pronghorn is extinct in Tamaulipas, but its
occurrence in the northern part of the state in relatively recent time
(more than 100 years ago) seems possible because the habitat in
northern Tamaulipas is suitable for the pronghorn.