The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . r conical form, which they carry about with them. Their gildedspines form two comb-like series, the teeth of which are directed downwards ; and the intestine is very ample,and several times folded, being ordinarily full of sand ; they are Pectinaires of Lamarck, the Amphyctines, Sav.,the C/iri/sodons, Oken, and the Cistena, Leach. Such, upon our coasts, is the A. helgica, Gmelin, with a tubetwo inches long, formed of small round granules of various colours. A
The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . r conical form, which they carry about with them. Their gildedspines form two comb-like series, the teeth of which are directed downwards ; and the intestine is very ample,and several times folded, being ordinarily full of sand ; they are Pectinaires of Lamarck, the Amphyctines, Sav.,the C/iri/sodons, Oken, and the Cistena, Leach. Such, upon our coasts, is the A. helgica, Gmelin, with a tubetwo inches long, formed of small round granules of various colours. A much larger species occurs in the Southernseas, A. auricoma capensis, Pallas, the slender and polished tube of which appears as though transversely fibrous,and formed of a soft fucus-stem-like substance, dried up. There are some species which inhabit factitious tubes fixed to various substances. Their gilded spines formseveral concentric crowns upon the head, whence results an operculum that closes the tube when they contractinto it, but which has two parts that can be spread asunder. They have a cirrhus on each foot. ITieir body.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjecta, booksubjectzoology
