. The emigrations of animals from the sea. Animal ecology; Animal migration. Body Fluids 121 found in various crustaceans, insects, moUusks, annelids, gephy- reans, echinoderms, and nemerteans. Haemocyanin, which contains copper, is found in various crustaceans, arachnids, gastropods, and cephalopods. Other respiratory pigments are found as folloiiys: chlorocruorin, chaetopods; haemerythrin, gephyreans; chlorophyl, lepidopterous insects; and tetronerythrin, decapod Fig. 21. A fresh water crab from Colombia.' The occurrence of respiratory pigments is without reference to phylogene
. The emigrations of animals from the sea. Animal ecology; Animal migration. Body Fluids 121 found in various crustaceans, insects, moUusks, annelids, gephy- reans, echinoderms, and nemerteans. Haemocyanin, which contains copper, is found in various crustaceans, arachnids, gastropods, and cephalopods. Other respiratory pigments are found as folloiiys: chlorocruorin, chaetopods; haemerythrin, gephyreans; chlorophyl, lepidopterous insects; and tetronerythrin, decapod Fig. 21. A fresh water crab from Colombia.' The occurrence of respiratory pigments is without reference to phylogenetic relationship. Some chironomid larvae which live in stagnant water contain so much haemoglobin that they have long been known as blood worms; others which dwell in well-aerated wa- ters are quite transparent. It has been said that haemoglobin occurs where there is a dearth of oxygen,—often in aquatic habitats on. 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 Pearse, A. S. (Arthur Sperry), 1877-1956. Dryden, N. Y. , Sherwood Press
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