There is no more interesting biologic or clinical problem than that of intersexuality. What, as a matter of fact, does one mean by sex? Biologists answer that there is no such biologic entity and that the concept of sex is confused with that of the sexes. The latter term, again, merely indicates our concept of what constitutes maleness on the one hand and femaleness on the other, and opinions are quite apt to vary on this point. To begin with the absurd, a visitor to earth from some sexless planet might soon deduce that the males of our population are those wearing trousers and the females those wearing skirts. The trousered Marlene Dietrich on the one hand and the kilted Scotch Highlander on the other would later convince him of the fallacy of such a generalization. Such sex attributes as hair distribution, character of voice and body contour are certainly