Eligmodontia morgani Allen, 1901 . Bull. Am. Mus. Nat. Hist., 14:409.

TYPE LOCALITY: Argentina, Santa Cruz Prov., basaltic canyons 50 mi SE Lake Buenos Aires .

DISTRIBUTION: W Patagonian region of S Argentina and adjacent Chile; limits of distribution unknown, perhaps as far north as Neuquen Prov., Argentina.

COMMENTS: This species epithet was used by Kelt et al. (1991) for the 2n=32 chromosomal form but whether this karyotype characterizes animals from the type locality needs verification. Other forms of Eligmodontia occur in the area.