Chontoquiros

Chontoquiros, a Peruvian people in the Cuzco Mountain and Ucayali Valley, so called from chonta, a "stick," and quiro "teeth," because they stain their teeth black with a stick; but their real name is Siriminche. Their language is quite distinct, having no affinity with any other, and Paz Soldan mentions the curious fact that the names of all members of the human body begin with the letter w.