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affixed animals aperture appendage base bivalve shells bosses BRACHIOPODA Bulla byssus canal Carinaria Cephalopoda chambers channel Chitons composed Conchologist conical connected cuttle fish cylindrical deep notch dilated dimiaria Discoid divisions external flat flattened foliated follow fossil fresh water Gasteropoda Gastropod genera genus groove hinge inhabited inner lip irregular Lamarck last family last whorl lateral teeth lengthened ligament ligament internal Limpet lip thickened live lower valve margin Minute Mollusca mouth narrow mouth wide Muscles muscular impressions naked Nautilus Nudibranchia numerous Oblong operculum shelly orbicular outer lip oval oyster pear-shaped pearly inside perforated Pholas phytophag pillar plaits plate procured recurved Resembling the last rocks Scaphites septa transverse shell belongs shell fish short spire side sinuated small shells species spines spiral shells Spiral whorls spire straight striated substance syphon Testacia thick thin transparent tribe Trochus tube tubular turbo Turritella univalve valve convex valves gape Varices Volutes volutida Whelks
Page 3 - As our present business, however, is with the shells, and not with the animals, we shall chiefly confine our remarks to the
Page 19 - channel long; no plaits, but the tip of the spire enlarged. Fossil only.
Page 3 - Conchology, as a science, must be founded both upon the structure of the soft parts of the animal,