Tylor, Alfred, 1824-1884, Skertchly, Sydney B. J. (Sydney Barber Josiah), 1850-1927 · London : Printed by Alabaster, Passmore and Sons · leaf 122
of favourable cases, for these animalspossess a sort of backbone—the well-known cuttle-bone—and hencethey have a dorsal line. Some shells, as Margarita catenata, have a chain-pattern, and inthis case the action of the pigment cells takes vplace at regular andshort intervals. Others, as Mactra… … CHAPTER XIV. Colouration of Vertebrata. THE vertebrata, as their name implies, are distinguished by thepossession of an internal skeleton, of which the backbone is themost essential part, and the general, but not universal, possession oflimbs or appendages. Consequently we find that the dorsal and…
Color of animals · Animal behavior · Plants
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