Microxus Thomas, 1909 . Ann. Mag. Nat. Hist., ser. 8, 4:237.

REVIEWED BY: A. Langguth (AL); R. A. Ojeda (RAO).

COMMENT: Included in Akodon by Cabrera, 1961:458, and Arata, 1967, in Anderson and Jones, p. 229. Reig, 1978, Publ. Mus. Munic. Cienc. Nat. Mar del Plata "Lorenzo Scaglia," 2(8): 176, and Reig, 1980, J. Zool. Lond., 192:257-281, considered Microxus a distinct genus. Bianchi et al., 1971, Evolution, 25:724-736, and Ellerman, 1941:419, considered Microxus a distinct genus and were followed by Corbet and Hill, 1980:151. Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:30, followed Hershkovitz, 1966, Z. Saugetierk., 31:86, who considered Microxus a synonym of Abrothrix which he placed in the oxymycterine group. Formerly included Oxymycterus iheringi; see Massoia, 1963, Physis, 24:129- 136, and Hershkovitz, 1966, Z. Saugetierk., 31:86, 127. This taxon is in need of revision and its relationship with the oxymycterines and akodonts needs clarification. Subfamily Hesperomyinae; see comment under Cricetidae.