Darling Downs hopping mouse

Notomys

Notomys mitchellii, still extant at southern coastal regions, although significant differences in the dentition distinguish this species.^[3] The provenance of the holotype was disputed after its description, although later authors reviews saw no reasonable foundation to this suggestion. The description as a new species was disputed in the early twentieth century, with proposals it be recognised as a large specimen of the Mitchell's hopping mouse. The situation was complicated by the discovery of subfossil remains at Coonabarabran that correspond to the species N. mitchelli (NE New South Wales), leaving three uncertain scenarios on the former range or speciation in the area.^[4]

Notomys alexis associated with the spinifex vegetation of the arid central region.^[2] Thomas had noted the skull in his 1921 revision of Notomys, but hesitated to assign it as a new species until he examined other material.^[5]