Kemp's grass mouse
[3] It is named for Robin Kemp, who collected specimens of mice from the area for the British Museum.The fur is dense and soft, and is a very dark brown, almost black, over most of the body, fading to brownish-grey on the underparts.[4] Kemp's grass mouse is found around the mouth of the Río de la Plata in the Buenos Aires and Entre Ríos provinces of Argentina, throughout southern and eastern Uruguay, and near the coast of Rio Grande do Sul in extreme southern Brazil.[1] Within this region, it is found in treeless wetlands such as marshlands and grassy floodplains, and less commonly on the margins of forested areas.[4] Two subspecies are recognised: Despite living in wetlands, Kemp's grass mouse is not an especially strong swimmer, and has feet more adapted for digging.