TATE, G.H.H. 1932. The taxonomic history of the south and central american akodont rodent genera: Thalpomys, Deltamys, Thaptomys, Hypsimys, Bolomys, Chroeomys, Abrothrix, Scotinomys, Akodon (Chalcomys and Akodon), Microxus, Podoxymys, Lenoxus, Oxymycterus, Notiomys, and Blarinomys. American Museum Novitates 582:1:32.
Abstract. In this paper, the sixth of my series, I have continued the treatment given in earlier papers. Since neither the several new akodont genera proposed by Thomas not his "groups" of the subgenus Akodon (sensu stricto) appear to be sharply defined, geographic arrangement of the species has been particularly difficult and may prove unsatisfactory. Though wishing to preserve, as much as possible, the arrangement of genera made by Thomas (1916), I have felt that certain changes were desirable: Zygodontomys has been treated in my fifth paper, and the akodont genera are rearranged so as to include Scotinomys and the new genera Deltamys and Hypsimys and to place Akodon (Akodon) next to Microxus.