Archive image from page 365 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 352 THE DESCENT OF MAN. In the genus Chamgeleon we come to the acme of difference be- tween the sexes. The upper part of the skull of the male C. bifurcus (fig. 35), an inhabitant of Madagascar, is produced into two great, solid, bony projections, covered with scales like the rest of the head; and of this wonderful modification of structure the female exhibits only a rudiment. Again, in Chamseleon Owenii (fig. 36), from the West Coast of Africa, the male be
Archive image from page 365 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 352 THE DESCENT OF MAN. In the genus Chamgeleon we come to the acme of difference be- tween the sexes. The upper part of the skull of the male C. bifurcus (fig. 35), an inhabitant of Madagascar, is produced into two great, solid, bony projections, covered with scales like the rest of the head; and of this wonderful modification of structure the female exhibits only a rudiment. Again, in Chamseleon Owenii (fig. 36), from the West Coast of Africa, the male bears on his snout and Fig-. 35. Chamaeleon bifurcus. Upper figure, male; lower figure, female. forehead three curious horns, of which ihe female has not a trace. These horns consist of an excrescence of bone covered with a smooth sheath, forming part of the general integuments of the body, so that they are identical in structure with those of a bull, goat, or other sheathhorned ruminant. Although the three horns differ so much in appearance from the two great prolongations of the skull in C. bifurcus, we can hardly doubt that they serve the same general purpose in the economy of these two animals. The
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