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British Marine Conchology: Being a Descriptive Catalogue, Arranged According ...
No hay vista previa disponible - 2017
British Marine Conchology; Being a Descriptive Catalogue, Arranged According ...
No hay vista previa disponible - 2013
Aberdeen acute angular angulated anteriorly aperture suborbicular apex base beaks body whorl brown brownish canal cavity central chesnut Coasts color columella compressed concave Conchology conic convex Cornwall curved decussated depressed Devon dorsal Dublin Bay elevated elongated epidermis equivalve extremely flat flattened Fuci glossy white Gmel groove Guernsey hinge inequilateral inner lip inside white interstices lateral teeth ligament internal lines longitudinal ribs longitudinal striae lunule Macg margin Mont narrow oblique oblong obtuse opaque operculum orbicular outer lip outer lip thin oval ovate pale pellucid peristome pillar lip posterior posteriorly purple purplish radiating rare reddish ridges rounded rufous Scotland shell side slightly smooth species spiral striae spire striated transversely suboval suture tapering thick thickened tooth Torbay transverse striae truncated tuberculated tumid Turbo Turt Turton umbilicus upper valve ventral edge volutions Weymouth whitish whorls five whorls six wrinkled yellowish white
Página 67 - Suborbicular, inequilateral; beaks small, pointed, and oblique ; hinge variable, sometimes with two divergent teeth, one of which is bifid, but changing with age ; two lateral teeth, the intermediate one obsolete ; the posterior nearest the primary ones ; two distinct muscular impressions widely separated, the posterior one prolonged.
Página 42 - Transverse, inequilateral, subtrigonal ; sides slightly gaping ; beaks prominent ; one primary compressed tooth in each valve, and an adjacent heart-shaped cavity; two lateral compressed teeth, situated near the hinge, and inserted ; ligament internal and placed in the pit of the hinge.
Página 37 - Transverse, (japing at both ends, with one large dilated projecting rounded and nearly vertical cardinal tooth in the left valve, and with a hollow in the opposite valve: ligament internal, short, thick and inserted in the hollow of the primary tooth, and in the pit of the other valve. M.
Página 47 - Oval or oblong, equivalve, inequilateral, mostly closed ; hinge with two teeth in each valve and a cavity between them, lateral teeth none; ligament internal.
Página 36 - STRIGILATUS of British authors. Elongated oblong, breadth twice and a half the length, ends rounded, uniform white, marked with coarse ridges of growth, and anteriorly with curved radiating strigils : beaks subcentral, anterior slope with divaricating striae; ventral edge straightish, sub-incurved in the middle : an oblique and an erect tooth in each valve (in one valve the former rudimentary) : nymphae distinct. £. . 1^. — Mediterranean, tf-c.
Página 73 - DONAX. Transverse, equivalve, inequilateral; with the anterior side very short and obtuse; two primary teeth in one or both valves ; and one or two lateral teeth, more or less distant ; ligament external, short, inserted at the posterior impression.
Página 44 - Shell flat, nearly orbicular, equivalve, inequilateral, a little open at the sides. Hinge of one valve with a single tooth and a transverse linear lateral one each side; of the other valve with a cavity in the middle and a transverse deeply cloven lateral tooth each side, the segments of which divaricate from the beak.
Página 58 - Biv. t. 6. f. 9. Oblong, nearly smooth, thin, sub-equilateral, anteriorly obtusely angulated, posteriorly rounded, yellowish with either red interrupted rays or zones, but always with one small distinct posterior ray, which only proceeds a short distance from the beaks.
Página 56 - Transverse, inequilateral, posterior side short, the an~ tenor slightly gaping ; hinge with two cardinal teeth in the right valve and three in the left (sometimes three in each) ; teeth small approximated, parallel and slightly divergent : ligament external.