Figure 16 from Darwin's The Descent of Man, 2nd edn. 1882., illustrating sexual dimorphism in beetles. "Fig. 16. Chalcosoma atlas. Upper figure, male (reduced); lower figure, female (nat. size)."
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|current||14:54, November 4, 2007||247 × 265 (35 KB)||PhloxBot||Figure 16 from Darwin's ''The Descent of Man'', 2nd edn. 1882.[http://pages.britishlibrary.net/charles.darwin/texts/descent/descent10.html], illustrating sexual dimorphism in beetles. "Fig. 16. Chalcosoma atlas. Upper figure, male (reduced); lower figure,|