An illustrated introduction to Lamarck's conchology; contained in his Histoire naturelle des animaux sans vertèbres: being a literal translation of the descriptions of the recent and fossil genera / Accompanied by ... plates. By Edmund A. Crouch, F.L.S.

  • Edmund A. Crouch
Date:
1826
Catalogue details

Licence: Public Domain Mark

Credit: An illustrated introduction to Lamarck's conchology; contained in his Histoire naturelle des animaux sans vertèbres: being a literal translation of the descriptions of the recent and fossil genera / Accompanied by ... plates. By Edmund A. Crouch, F.L.S. Source: Wellcome Collection.

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    ORDER II_GASTEROPODA. Some are naked, others have a dorsal shell, not enveloping: again, others have a shell more or less hidden in their mantle. THIS Order is divided into two Sections—Hydrobranchiae and Pneumobi’anchiae. SECTION I— HYDROBRANCHLE. Contains Six Families, viz. Tritoniana, Phyllidiana, Semi Phyllidiana, Calyptraciana, Bullaeana, and Aplysiana. TRITONIANA._6 Genera. Without shells, either external or internal. Glaucus.—No shell. Eolis.—Ditto. Tritonia.—Ditto. Scyluea.—Ditto. Tethys.—Ditto. Doris.—Ditto. PHYLLIDIANA. — 4 Genera. Some are without shells, either internal or external: others are wholly or partly covered by a shell, sometimes composed of one single piece, sometimes of a range of moveable and distinct pieces. Phyllidia.—Has no shell. Chitonellus.—Body elongated, rather narrow, like a caterpillar, the middle of the back furnished with a multivalve shell; valves alternate, mostly longitudinal; they are nearly connected by their extremities. Plate XIII. Fig. 11. C. striatus. [Mrs. Mawe’s Cabinet.] Chiton.—Body oval-oblong, convex, rounded at the extremities; bordered all round by a coriaceous skin; partly covered by a longitudinal series of testaceous, imbri¬ cated, transverse, moveable pieces, set in the borders of the mantle. Plate XIII. Fig. 12. C. Magellanicus. (Idem.—Gmel.) Patella.—Shell univalve, not spiral, covering the animal, shield-like, or retuse-conical; concave and simple below, without any fissure on the margin; the summit entire, and inclined anteriorly. Plate XIII. Fig. 13. P. miniata. (P. sanguinolenta.—Gmel.) (a) Inside of ditto SEMI-PHYLLIDIANA_2 Genera. Pleurobranchus.—Shell internal, dorsal, thin, flattened, often oblique-oval. Plate XIII. Fig. 14, 14 («). P. plumula. (Bulla plumula.—Montagu.) E