The Conchologist's Text-book, Embracing the Arrangements of Lamarck and Linnĉus, with a Glossary of Technical Terms. To which is Added a Brief Account of the Mollusca. Sixth Edition [of the Work by Thomas Brown], Corrected and Enlarged by William Macgillivray, Etc
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acute animal aperture apex arms attached bands base beak beneath bivalve body branchiĉ British seas broad brown canal cavity Character Character.-Shell closed coasts colour columella common compressed conical convex covered deep depressed destitute distinct divided edge elongated entire epidermis external extremity eyes FAMILY five flat foot four furnished gaping genera Genus glossy half head hinge inch long Indian ocean Inhabits Inhabits the British Inhabits the Indian inside internal Lamarck lateral length less ligament lines longitudinal lower mantle margin mouth nearly oblique oblong obtuse operculum orbicular ORDER outer lip oval ovate perforated placed plaits Plate XII pointed posterior projecting reflected ribs rivers rounded seas separated shell short side situated slightly smooth sometimes species spiral spire straight striĉ striated strong surface teeth tentacula thick thin tooth transverse truncated tube turned univalve upper valve ventricose volutions wrinkled