Among the Sakalaves of Madagascar there are certain boys called _sekatra_, as described by Lasnet, who are apparently chosen from childhood on account of weak or delicate appearance and brought up as girls. They live like women and have intercourse with men, with or without sodomy, paying the men who please them.[35] Among the negro population of Zanzibar forms of homosexuality which are believed to be congenital (as well as acquired forms) are said to be fairly common. Their frequency is thought to be due to Arab influence. The male congenital inverts show from their earliest years no aptitude for men's occupations, but are attracted toward female occupations. As they grow older they wear women's clothes, dress their hair in women's fashion, and behave altogether like women. They associate only with women and with male prostitutes, and they obtain sexual satisfaction by passive pederasty or in ways simulating coitus. In appearance they resemble ordinary male prostitutes, who are common in Zanzibar, but it is noteworthy that the natives make a clear distinction between them and men prostitutes. The latter are looked down on with contempt, while the former, as being what they are "by the will of God," are tolerated.[36] Homosexuality; occurs in various parts of Africa. Cases of _effeminatio_ and passive sodomy have been reported from Unyamwezi and Uganda. Among the Bangala of the Upper Congo sodomy between men is very common, especially when they are away from home, in strange towns, or in fishing camps. If, however, a man had intercourse with a woman _per anum_ he was at one time liable to be put to death.[37] Among the Papuans in some parts of New Guinea, as already mentioned, homosexuality is said to be well recognized, and is resorted to for convenience as well, perhaps, as for Malthusian reasons.[38] But in the Rigo district of British New Guinea, where habitual sodomy is not practised, Dr. Seligmann, of the Cambridge Anthropological Expedition to Torres Straits, made some highly important observations on several men and women who clearly appeared to be cases of congenital sexual inversion with some degree of esthetic inversion and even some anatomical modification.[39] These people, it may be noted, belong to a primitive race, uncontaminated by contact with white races, and practically still in the Stone Age.