Euneomys petersoni J. A. Allen, 1903 . Bull. Am. Mus. Nat. Hist., 19:192.

TYPE LOCALITY: Argentina, Santa Cruz Prov., upper Rio Chico, near the Cordilleras .

DISTRIBUTION: Extreme S Argentina and adjacent Chile, excluding Tierra del Fuego; limits uncertain.

SYNONYMS: dabbenei.

COMMENTS: Relegated to a subspecies of E. chinchilloides by Hershkovitz (1962) and Pearson and Christie (1991), but Osgood (1943) had noted the nearby occurrence of E. petersoni and E. chinchilloides without evidence of intergradation.