Taterillus pygargus (F. Cuvier, 1838) . Trans. Zool. Soc. London, 2:142.

TYPE LOCALITY: Senegal, probably St. Louis (as suggested by Robbins, 1977:191) .

DISTRIBUTION: Gambia, Senegal, S Mauritania, and W Mali.

COMMENTS: Cuvier's pygargus was included in Gerbillus pyramidum, but the holotype is an example of Taterillus (Petter et al., 1972; Petter, 1975b, and references therein). Apparently unaware of Petter's observation, Lay (1983) listed pygargus as a species of Gerbillus known only from the type locality, which he thought was Egypt.