. The biology of marine animals. Marine animals; Physiology, Comparative. PIGMENTS AND COLOURS 471 Carotenoids. Carotenoids are very widespread and occur in the majority of animals. They are divisible into two broad groups: carotenes, which are hydrocarbons; and oxygen-containing carotene derivatives, namely xanthophylls, carotenoid acids and esters. Empirical formulae are C40H56 for carotene, and C40H56O2 for xanthophyll. Carotenoids are soluble in lipoids and in typical lipoid solvents but insoluble in water. They Tentacles —*r Ccipitulum\ Siphonog/yph Stomodaeum. Please note that
. The biology of marine animals. Marine animals; Physiology, Comparative. PIGMENTS AND COLOURS 471 Carotenoids. Carotenoids are very widespread and occur in the majority of animals. They are divisible into two broad groups: carotenes, which are hydrocarbons; and oxygen-containing carotene derivatives, namely xanthophylls, carotenoid acids and esters. Empirical formulae are C40H56 for carotene, and C40H56O2 for xanthophyll. Carotenoids are soluble in lipoids and in typical lipoid solvents but insoluble in water. They Tentacles —*r Ccipitulum\ Siphonog/yph Stomodaeum. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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