Abrothrix olivaceus markhami

Abrothrix olivaceus markhami, also known as the Wellington Akodont or Markham's Grass Mouse, is a subspecies of the South American rodent "Abrothrix olivaceus". It occurs on Wellington Island and the nearby Southern Patagonian Ice Field in southern Chile. It was previously recognized as a valid species, but is close to other recognized subspecies of "A. olivaceus".