 | William Somerville Orr - 1855 - 520 pages
...structure is in fact scarcely recognisable in these animals, except in the arrangement of the tentacula which surround the mouth. The body is always more...in one family the ambulacra are entirely wanting. Divisions. — This order is divided into two families. The first, the Synaptidœ, are characterized... | |
 | Edward Smith - 1855 - 522 pages
...is in faet seareely reeognisable in these animals, exeept in the arrangement of the tentaeula whieh surround the mouth. The body is always more or less...at one end and the anal opening at the other ; the ealeareous deposit in the skin is redueed Ь seattered granules ; and in one family the ambulaera are... | |
 | Jabez Hogg - 1856 - 530 pages
...lower surface of the arms. HOLOTHURI^E, OR SEA-CUCUMBERS. In this order the body acquires a worm-like form. The radiate structure is in fact scarcely recognisable...in one family the ambulacra are entirely wanting. This order is divided into two families. The first, the Synaptidce, are characterised by the total... | |
 | Jabez Hogg - 1856 - 532 pages
...surface of the arms. HOLOTHURI^E, OB SEA-CUCUMBERS. In this order the body . acquires a worm- like form. The radiate structure is in fact scarcely recognisable...in one family the ambulacra are entirely wanting. This order is divided into two families. The first, the Synaptidce, are characterised by the total... | |
 | Jabez Hogg - 1861 - 650 pages
...in these animals, except in the arrangement of the tentacles which surround the mouth. The body ia always more or less elongated, with the mouth at one...one family the ambulacra are entirely wanting. The Holothurida inhabit the seas of most parts of the world. Some'of them are eaten even by European populations... | |
 | 1913 - 780 pages
...parallelism, no matter what their ultimate origin might have been. The body of Pelagothuria is tubular, with the mouth at one end and the anal opening at the other; its alimentary canal is in loops (a long-drawn-out spiral) ; the swimming organ is merely an expansion... | |
 | 1913 - 798 pages
...parallelism, no matter what their ultimate origin might have been. The body of Pelagothuria is tubular, with the mouth at one end and the anal opening at the other; its alimentary canal is in loops (a long-drawn-out spiral) ; the swimming organ is merely an expansion... | |
 | 1913 - 780 pages
...parallelism, no matter what their ultimate origin might have been. The body of Pelagothuria is tubular, with the mouth at one end and the anal opening at the other; its alimentary canal is in loops (a long-drawn-out spiral) ; the swimming organ is merely an expansion... | |
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Sea-cucumbers." — In this family the body acquires a slug-like form. The radiate structure is in fact scarcely recognisable in these animals, except in the arrangement of the tentacles which surround the mouth. The body is always more or less elongated,... 