One of the most surprising, but at the same time one of the most instructive taboo customs of mourning among primitive races is the prohibition against pronouncing the _name_ of the deceased. This is very widespread, and has been subjected to many modifications with important consequences. Aside from the Australians and the Polynesians, who usually show us taboo customs in their best state of preservation, we also find this prohibition among races so far apart and unrelated to each other as the Samojedes in Siberia and the Todas in South India, the Mongolians of Tartary and the Tuaregs of the Sahara, the Aino of Japan and the Akamba and Nandi in Central Africa, the Tinguanes in the Philippines and the inhabitants of the Nikobari Islands and of Madagascar and Borneo[70]. Among some of these races the prohibition and its consequences hold good only for the period of mourning while in others it remains permanent; but in all cases it seems to diminish with the lapse of time after the death. The avoidance of the name of the deceased is as a rule kept up with extraordinary severity. Thus, among many South American tribes, it is considered the gravest insult to the survivors to pronounce the name of the deceased in their presence, and the penalty set for it is no less than that for the slaying itself[71]. At first it is not easy to guess why the mention of the name should be so abominated, but the dangers associated with it have called into being a whole series of interesting and important expedients to avoid this. Thus the Masai in Africa have hit upon the evasion of changing the name of the deceased immediately upon his death; he may now be mentioned without dread by this new name, while all the prohibitions remain attached to the old name. It seems to be assumed that the ghost does not know his new name and will not find it out. The Australian tribes on Adelaide and Encounter Bay are so consistently cautious that when a death occurs almost every person who has the same name as the deceased or a very similar one, exchanges it for another. Sometimes by a further extension of the same idea as seen among several tribes in Victoria and in North America all the relatives of the deceased change their names regardless of whether their names resemble the name of the deceased in sound. Among the Guaycuru in Paraguay the chief used to give new names to all the members of the tribe, on such sad occasions, which they then remembered as if they had always had them[72].