. The Cambridge natural history. Zoology. DENDROCHIROTA 573 Four genera (Cucumaria, Thyone, Phyllophorus, and Psolus) and sixteen species have been recorded from British waters. Cucumaria is remarkable for being the only genus of Holo- thuroidea in which the body is penta- gonal in cross- section. In the majority of its species the tube- feet are confined to two rows along each radius, but in a few there are some scattered tube-feet in addi- tion. There are only ten buccal tentacles. The species figured (C. croeea) is an Ant- arctic one which carries the young on the back. Thyone differs in be
. The Cambridge natural history. Zoology. DENDROCHIROTA 573 Four genera (Cucumaria, Thyone, Phyllophorus, and Psolus) and sixteen species have been recorded from British waters. Cucumaria is remarkable for being the only genus of Holo- thuroidea in which the body is penta- gonal in cross- section. In the majority of its species the tube- feet are confined to two rows along each radius, but in a few there are some scattered tube-feet in addi- tion. There are only ten buccal tentacles. The species figured (C. croeea) is an Ant- arctic one which carries the young on the back. Thyone differs in being circular in cross - section and in having the tube-feet scattered evenly over the whole surface. In Fhyllophorus (Fig. 260) the tent- acles are more than fifteen, and are disposed in two circles, an inner of smaller and an outer of larger tentacles, scattered. Fsolus is a most extraordinary The other podia are, as in Thyone, There is a well-. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
