1881. _List of mammals collected by Dr. Edward Palmer in
northeastern Mexico, with field-notes by the collector._
Bull. Mus. Comp. Zool., 8:183-189, March.
1891. _On a collection of mammals from southern Texas and
northeastern Mexico._ Bull. Amer. Nat. Hist., 3:219-229,
December.
1891. A preliminary study of the North American opossums of
the genus Didelphis. _Ibid._, 14:149-188, 4 pls., June 15.