A Manual of Conchology: According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville Exemplified and Arranged for the Use of Students

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Harper & brothers, 1838 - 191 Seiten
 

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Seite 1 - Manual of Conchology, According to the System laid down by Lamarck, with the late Improvements by De Blainville. Exemplified and arranged for the Use of Students, by THOMAS WYATT, MA Illustrated with 36 Plates, containing more than 200 Types drawn from the Natural Shell.
Seite 183 - ... a waved surface. Ungulate, shaped like a horse's hoof. Unilocular, with a single chamber or compartment. Univalve, shells consisting of one valve, or piece. Volutions, the wreaths, or turnings of the shells of univalves. Urceolate, swelling in the middle like a pitcher. Vulva, a mark in several bivalve shells ; formed when the valves are united on the posterior and anterior slopes.
Seite 180 - Lanceolate, oblong, and gradually tapering like the head of a lance. Lateral, extending to one side from the centre. Latticed, having longitudinal lines or furrows, decussate by transverse ones. Lenticulate, doubly convex, of the form of a lens. Ligament, a solid body, softer than a cartilage, but harder than a membrane, which connects the valves in bivalves. Limb, the margin of bivalve shells. Linear, composed of lines. Lineate, marked with lines. Lip, the outer edge of the aperture of univalves....
Seite 182 - Testaceous, consisting of carbonate of liiae and animal matter. Tetragonal, four cornered. Torose, swelling into knobs or protuberances. Tortuosity, wreath, flexure. Tortuous, twisted, wreathed, winding Transverse, placed across, or crossways. When the breadth of a shell is greater than its length, it is called transverse.
Seite 5 - ... structure and form, varnish of exterior, and pearly lustre of interior surface, in a great number of cases, would require more than an artist's pencil to give them the perfect appearance of nature. Upon this the author himself remarks in his introduction : " In this manual of conchology, we have endeavored to give a free translation of Lamarck's system, as simplified by De Blainville...
Seite 178 - Cochleate, twisted like a serew or the shell of a snail. Columella, the upright pillar in the centre of most of the univalve shells. Commissure, a joint or seam. Complicated, doubled together. Compressed,squeezed together perpendicularly, in opposition to depressed, which is flattened horizontally.
Seite 5 - Upon this the author himself remarks in his introduction : " In this manual of conchology, we have endeavored to give a free translation of Lamarck's system, as simplified by De Blainville, and in order to facilitate as much as possible the study of this beautiful and interesting science, we have divided it into four classes — Annelides, Cirrhipedes, Conchifera, and Mollusca. To each class we have assigned its various families, to each family its genera, and to each genus its living species, thereby...
Seite 79 - Shell subequivalve, rotundate, nearly square, externally squamose; the inferior cardinal margin straight, not caudate anteriorly; a sinus at the posterior base of the valves, for the passage of the byssus; the left valve being at this place narrow and channelled; hinge linear, without teeth. Facet of the ligament marginal, elongated, nearly external, dilated in the middle.
Seite 46 - Suboval, rlattish, much sloping on the anterior side, semistriated, and semi.pellucid, hinge with two teeth in one valve, and one in the other, pale yellow ; longitudinally radiated with pink ; half an inch long and three fourths of an inch broad.
Seite 23 - I is valves which are very small, and blended with the surface of the tube : it lives in sand. Clavagella (Fig. 15) is a very irregular tube, with branches at the closed end; within it, is one free or moveable valve, united by a ligament to another, which is blended with the tube : it lives in sand and coral.

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