A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, From Western Mexico The fruit-eating bats of the genus Sturnira are represented on the North American mainland by two species, S. lilium and S. ludovici. The former, in most areas the smaller of the two, is widely distributed in México and Central America and is common […]

A New Supspecies of Slider Turtle (Pseudemys scripta) from Coahuila, Mexico. In September, 1958, the author and two colleagues collected a large series of _Pseudemys_ in small ponds and in a river in the basin of Cuatro Ciénegas, Coahuila. The specimens prove to represent a previously unrecognized subspecies of _Pseudemys scripta_. The subspecies is named […]

The systematic status of the populations of lizards assignable to _Cnemidophorus sacki_ in western México (Sonora southward to Jalisco) has been reviewed in detail by Zweifel (1959, Bull. Amer. Mus. Nat. Hist, 117 (2):57-116), who stated that the use of the specific name _sacki_ for the western populations rests upon a reasonable, but as yet […]