Alvarez, T.

1961. Taxonomic status of some mice of the Peromyscus boylii group in eastern México, with description of a new subspecies. Univ. Kansas Publ., Mus. Nat. Hist., 14:111-120, 1 fig., December 29.

1962. A new subspecies of ground squirrel (Spermophilus spilosoma) from Tamaulipas, México. Ibid., 14:121-124, March 7.

Anderson, S.

1956. Extensions of known ranges of Mexican bats. Ibid., 9:347-351, August 15.

Anthony, H. E.

1923. Mammals from Mexico and South America. Amer. Mus. Novit., 54:1-10, 2 figs., January 17.

Bailey, V.

1895. Biological survey of Texas. N. Amer. Fauna, 25:1-222, 23 figs., 8 pls., October 24.