Chelemys delfini Cabrera 1905 Chelemys delfini Cabrera 1905, Rev. Chilena Hist. Nat., 9: 15. Type Locality: Chile, Magallanes Prov., Straits of Magellan, Punta Arenas. Vernacular Names: Magellanic Long-clawed Akodont. Distribution: Southernmost Chile. Discussion: Taxonomic status and distributional extent require refinement—treated as a subspecies of C. megalonyx by Mann (1978) and Tamayo and Frassinetti (1980); retained as a species by Osgood (1943) and Reig (1987). Johnson et al. (1990) recognized C. delfini and C. macronyx as definable forms, separable by body size, in the Patagonian region of extreme S Chile.

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 1109, DOI: 10.5281/zenodo.7316535