File:The royal natural history (1893) (14779159784).jpg

Identifier: royalnaturalhist612lyde (find matches)
Title: The royal natural history
Year: 1893 (1890s)
Authors: Lydekker, Richard, 1849-1915 Sclater, Philip Lutley, 1829-1913 Frostick, W. B., former owner. DSI Brooks, W. T., former owner. DSI
Subjects: Zoology Natural history
Publisher: London and New York : Frederick Warne & Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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re- 35§ MOLLUSCS. corded from the Atlantic coasts of North America, north coast of France, and someparts of the Baltic. The animals belonging to the genus ScyUoea live upon floatingseaweed out on the high seas; S. pelagica being usually found upon the gulfweedof the Atlantic, which it resembles in its coloration. The foot is narrow, the sidesbeing thin, and capable of clasping the stems of the seaweed. The body is muchcompressed laterally, and produced into two large leaf-like appendages on each sideof the back, on the inner surface of which the tufted branchial processes are situated;a median supra-caudal crest also bearing branchial filaments. The tentacles areslender, laminated, and retractile within long compressed trumpet-shaped sheaths.The genus contains only a few species, but it has been found in almost every sea.Phyllirhoe is a genus of Nudibranchiata remarkable for the absence of both footand gills. The body is compressed laterally, and so translucent that all the internal
Text Appearing After Image:
Phyllirhoe bucephala in thl light, showing internal anatomy (greatly magnified). anatomy is visible. These animals are pelagic and eminently phosphorescent.Specimens kept in aquaria have been observed to be instantly luminous iftouched. In the JEolidiidoB the body is slug-like and tapering posteriorly. There are twolabial and two dorsal tentacles, and the dorsal branchial papillae are cylindrical orfusiform, and arranged in transverse rows on the sides of the back; the front of thecreeping disc is often produced on each side in the form of tentacles; the hornyjaws are large, and the radula consists generally of a single series of spinous plates.jEolidia papillosa, the largest of the British species, may be found under stonesbetween tide-marks on many parts of the coasts. It is brown, grey, or orange,spotted with brown or purple and white; the dorsal tentacles are brown withwhite tips, and the papillae are speckled with brown or lilac and white, withwhite tips. These molluscs are anima

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