British Conchology Or An Account of the Mollusca Which Now Inhabit the British
The book British Conchology Or An Account of the Mollusca Which Now Inhabit the British was written by author John Gwyn Jeffreys Here you can read free online of British Conchology Or An Account of the Mollusca Which Now Inhabit the British book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is British Conchology Or An Account of the Mollusca Which Now Inhabit the British a good or bad book?
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Turton's ' Ma- nual of British Land and Freshwater Shells. ' The work in question was published in 1801, Montagu's 'Testacea Britannica ' in 1803, and Draparnaud's * Histoire natu- HELIX. 223 relle des Mollusques terrestres et fluviatiles de la France ' was edited by his widow and appeared in 1805. Studer first gave this species the name of "rupestris " in Coxe's 'Travels through Switzerland' (1789), but did not de- scribe it. 21. H. PYGM^E'A*, Draparnaud. H. Pygmcea, Drap. Tabl. P. 93, and His...t. P. 114, pi. Viii. F. 8-10; F. & H. Iv. P. 83, pi. Cxxi. F. 9, 10. BODY greyish-brown or slate-colour, minutely speckled with black ; tubercles round and much depressed : mantle brown, with a slight tinge of red : tentacles rather close to- gether, nearly cylindrical, abruptly thickened at their base ; bulbs indistinct : foot narrow and ending in a thick and keeled tail. SHELL nearly circular, depressed above and below, thin, semitransparent, rather glossy and having a silky lustre, light-brown or tawny, marked transversely with extremely fine and close-set curved striae and spirally (especially round the umbilicus) with a few delicate lines, which are only perceptible with a high magnifier : periphery rounded and not keeled : epidermis rather thin : whorls 4, convex and cylindrical, gradually increasing in size : spire not much raised; summit glossy and transparent : suture deep : mouth shaped as in H.
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