. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. HOLOTIIURIOIDEA 13 the plates smaller, with the arms fairly often united to circular plates with four large holes and four to twelve small s. In the posterior part of the dorsal side of the body, the tables are more than twice as large as in the anterior part. They are normally four-armed with seven boles in tl nds of each arm, but often the arms are united to a large polypore plate. The spires (textfig. 12) are low and irregularly shaped, thus differing clearly from the corresponding spir
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. HOLOTIIURIOIDEA 13 the plates smaller, with the arms fairly often united to circular plates with four large holes and four to twelve small s. In the posterior part of the dorsal side of the body, the tables are more than twice as large as in the anterior part. They are normally four-armed with seven boles in tl nds of each arm, but often the arms are united to a large polypore plate. The spires (textfig. 12) are low and irregularly shaped, thus differing clearly from the corresponding spires in B. natans (textfig. 12 1-2). In the dorsal papillae there are some very high tallies (text- fig. 13 1-2). The base of these is either four short arms, each with a single perforation in the ends, or ringshaped plates. B. hexastylides differs definitely from all other species of Ba- thyplotes in having more than four pillars in the spires. At first I supposed that these specimens were only abnormal specimens of />'. natans, since normal four-pillared tables may also be found, but the presence of the characteristic tables appears to be typical. The specific difference from B. natans is also confirmed by the presence of only 18 tentacles and by the different shape of the large posterior tables as well as that of the general appear of the body. There is no doubt that we have here a valid and independent form of Textfig. 13. Bathyplotes heterostylides, calcareous deposits. • 300. / and 2, from a papilla. 3-12, from the shoulder. 13-16, from the midline of the ventral 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 Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
