The smooth hard covering of the mataco offers a better defence than the sharp spines of the hedgehog.
"A Naturalist's Voyage Round the World" by Charles Darwin
Pure survivals of this family are the Mataco and Toba of the Vermejo and Pilcomayo rivers.
"Man, Past and Present" by Agustus Henry Keane
Of these the Matacos and the Tobas are the most numerous.
"Argentina" by W. A. Hirst
It is here that the forest Indians are to be found, particularly the Tobas and the Matacos.
"The Amazing Argentine" by John Foster Fraser