Archive image from page 277 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 Fl'. 5. Anterior part of body of Callianassa (from Milne-Edwards), showing the unequal and differently constructed right and left-hand chelae of the male. N. B.—The artist by mistake has reversed the drawing, and made the left-hand chela the largest.

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