. Animal physiology. Physiology, Comparative. STRUCTURE OF ECHINODERMATA. 127 Egg); and they are also arranged in rows on the surface of the body of the Holothuria, as seen in fig. 67. 119. The radiated arrangement is very evident in the whole bodies of the Star-Fish (fig. 65), and Echinus or Sea- Urchin (fig. 69); but in the Holothuria (fig. 67) it is nearly confined to the parts about the mouth; which, however, exhibit it so completely, that such an animal cannot be mis- taken for one of the Articulated series, even though, as some- times happens, the body is prolonged into a worm-like form.
. Animal physiology. Physiology, Comparative. STRUCTURE OF ECHINODERMATA. 127 Egg); and they are also arranged in rows on the surface of the body of the Holothuria, as seen in fig. 67. 119. The radiated arrangement is very evident in the whole bodies of the Star-Fish (fig. 65), and Echinus or Sea- Urchin (fig. 69); but in the Holothuria (fig. 67) it is nearly confined to the parts about the mouth; which, however, exhibit it so completely, that such an animal cannot be mis- taken for one of the Articulated series, even though, as some- times happens, the body is prolonged into a worm-like form. The digestive apparatus in this class has usually a high degree of complexity, as will be seen by the accompany-. Fig. 69.—Interior op Echinus ing figure (fig. 69), which shows the interior of an Echinus^ whose globular shell has been sawn across its equator, so as. 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 Carpenter, William Benjamin, 1813-1885. London : H. G. Bohn
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Keywords: ., bookauthorcarpente, bookcentury1800, bookdecade1850, bookyear1859
