To begin with the class which stands in the closest connection with sexual life, we have already shown that all the various coverings by which primitive man conceals his nakedness, by attracting the attention are likely to produce a sort of sexual stimulation in the primitive spectator.[310] In some cases,—for instance that of the dancing girdles, which are especially put on for the occasion of erotic dances and festivals,—this stimulation is evidently intentional.[311] But it seems impossible to assume that a knowledge of this effect can have been the motive for the use of those phallocrypts which are worn by the Amaxosas in South Africa, by the natives of Central Brazil, by the Melanesians in the Admiralty Islands and on the north-western and south-western coasts of New Guinea, by the Australians of north-western Central Queensland, and by the Polynesians of the Marquesas Islands.[312] As far as we know, it is only in Australia that these things are especially employed at corroborees and public rejoicings.[313] Nor is there anything that could attract the eye in all the simple bamboo sheets that can be seen at the Museum für Völkerkunde in Berlin. In some cases they have perhaps been worn for the purely practical purpose of protecting a sensitive part against insect bites.[314] But it seems more probable, on an examination of their shape, that they really are intended as means of concealment in the proper meaning of the word. There is of course no reason why they should not be considered as fulfilling the requirements of modesty. But even if such be their purpose now, it is difficult to assume that they were originally called into existence by a feeling which, from the evolutionist point of view, one rather would consider as a product of clothes than as their cause.[315]