Euneomys chinchilloides (Waterhouse 1839) [Reithrodon] chinchilloides Waterhouse 1839, Zool. Voy. H. M. S. "Beagle", Mammalia: 72. Type Locality: Chile, Magallanes Prov., Tierra del Fuego, Straits of Magellan, south shore near E entrance. Vernacular Names: Tierra del Fuego Euneomys. Synonyms: Euneomys ultimus Thomas 1916. Distribution: Isla Grande de Tierra del Fuego, neighboring islands, and southernmost Chile (Magallanes); limits uncertain. Conservation: IUCN – Lower Risk (lc). Discussion: Hershkovitz (1962) had suggested that other nominal species would all prove to be synonyms of E. chinchilloides. His supposition has been taxonomically observed (Mann, 1978; Yañez et al., 1987) but misrepresents species diversity in the genus (see Pearson and Christie, 1991; Reise and Gallardo, 1990). Includes petersoni (see account below) according to Pearson and Christie (1991), Pearson (1995), and Reise and Gallardo (1990), but this synonymy requires more persuasive documentation. Also includes noei (see E. mordax account) according to Reise and Gallardo (1990), but this referral is incorrect.

Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, pp. 955-1189 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore :The Johns Hopkins University Press on page 1114, DOI: 10.5281/zenodo.7316535