Elements of Conchology: According to the Linnæan System ... |
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Page 22
... remark , that the young shells of many species present a very different appearance from that which distinguishes them when in a state of maturity . This difference has caused much con- fusion among naturalists , who were otherwise well ...
... remark , that the young shells of many species present a very different appearance from that which distinguishes them when in a state of maturity . This difference has caused much con- fusion among naturalists , who were otherwise well ...
Page 66
... remark , that the bend or fold of the extremity of the compressed slope is , without any exception , towards the left valve ; that is , to- wards the right hand of the observer when the shell is placed upon its base with the area in ...
... remark , that the bend or fold of the extremity of the compressed slope is , without any exception , towards the left valve ; that is , to- wards the right hand of the observer when the shell is placed upon its base with the area in ...
Page 69
... remark , that whenever an internal cartilage does occur , it is generally of a triangular shape , or of one tending to a three - sided prism , the acute angle of which is placed under the apex of the shell . It is hot pos- sible to ...
... remark , that whenever an internal cartilage does occur , it is generally of a triangular shape , or of one tending to a three - sided prism , the acute angle of which is placed under the apex of the shell . It is hot pos- sible to ...
Page 73
... remark made on CARDIUM echinatum , that in all other shells the suture of the spines is placed on the side furthest from the apex ; for in this muricated Venus the spines are evi- dently formed by an extension of the transverse plaits ...
... remark made on CARDIUM echinatum , that in all other shells the suture of the spines is placed on the side furthest from the apex ; for in this muricated Venus the spines are evi- dently formed by an extension of the transverse plaits ...
Page 75
... remark- able . Some species are , however , destitute of ears , and of the exserted beak . These shells are attached to rocks at consider- able depths in the ocean , from which they are se- parated with the greatest difficulty . They ...
... remark- able . Some species are , however , destitute of ears , and of the exserted beak . These shells are attached to rocks at consider- able depths in the ocean , from which they are se- parated with the greatest difficulty . They ...
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Elements of Conchology: According to the Linnaean System Edward John Burrow No preview available - 2016 |
Common terms and phrases
angular animal Anomia aperture aperture white apex ARCA areola base beaks Bivalves blueish brown Buccinum Bulla canal CARDIUM character Chiton cinereous colour columella columellar lip compressed Conchology convex copper-plates Coquilles cordate crenate Cypræa division DONAX eared equivalve finely striate gaping genera genus gibbous Haliotis HELIX hinge imperforate Indian Ocean Inhabits India Inhabits the Indian Inhabits the Mediterranean Journ l'Acad Lepas Linnæan Linnæus Lister Conch Lond longitudinally MACTRA margin Mém membranaceous MULTIVALVES Murex muricate Nautilus nearly NERITA oblique obtuse Operculum Ostrea outer lip Patella perforated Phil Pholas plaited plates posterior purplish rays reddish ribs rounded seas Shell ovate SHELL univalve side slope smooth SOLEN species Specimen pale Specimen white spines spiral spire SPONDYLUS spots striæ Strombus suture tapering teeth TELLINA Terebellum Testacea testaceous tooth Trans transversely striate Trochus truncate Turbo umbilicate umbilicus valves Venus VIII Voluta whorls wooden cuts yellow yellowish
Popular passages
Page 86 - Afyoraimu, a companion of Jason in the celebrated voyage of the ship Argo. The art of navigation is supposed to have owed its origin to the expert management of this instinctive sailor. He was observed by the ancients, and subsequent experience has confirmed the observation, to raise himself to the surface of the sea by ejecting a quantity of water, and thus diminishing the specific gravity of his vessel. When floating in a calm, he would throw out two or more tentacula, to serve as oars.
Page 31 - Striate ; encompassed with very fine raised or excavated lines : punctate striae are those which have elevated or impressed points placed along them ; the points may be concatenate, strung like beads, or perfuse, deeply excavated.
Page 32 - ... lilaliata. Bilabiate; constructed with both an internal and external lip; in opposition to those shells which are destitute of the interior one. dehiscens. Gaping ; the lower part of the lip being distended. coarctala. Coarctate; contracted, straight : opposed to effuse. effusa. Effuse; having the lips separated by a sinus or gutter, so that if the shell were filled with water it would flow out at the back part. reflexa. Reflex ; having the fore part of the lip reflected towards the lowest whorl....
Page 91 - Greek xSivoi expresses the peculiar form to which the genus is indebted for its name. CYPR^EA. A. Mucronate, or with a projecting spire. (Plate XIV. Fig. 1.) B. Obtuse, and without manifest spire. (Fig. 2.) C. Umbilicate. (Fig. 3.) D. Margined. (Fig. 4.) SHELL univalve, involute, subovate, obtuse, smooth. Aperture effuse at both ends, linear, toothed on both sides, longitudinal. The genus is remarkable for the high polish which adorns it in its native state. The only species of other genera which...
Page 104 - The very peculiar form of the aperture in this genus is a strong and never-failing distinctive feature. This is oblong-oval, or perfectly oval, seldom ovate, and does not gradually contract into a canal, but abruptly opens into it at the same or nearly the same width which it continues to retain throughout the whole length of the beak. Even in the division which is destitute of an exserted beak, the same contour is no less observable. The straightness of the rostrum is a much more questionable mark,...
Page 224 - Varech, etc., et sur une petite Coquille qui se loge dans le tronc de cette plante — Méra.
Page 79 - ... the division B. Strong locomotive powers have been attributed to the Pecten, which are, it is said, exerted in a most singular manner. A very rapid progress is effected by the sudden opening and closing of the shell. This is done with so much muscular force, as to throw it four or five inches at a time. In the water, an equal dexterity is evinced by the animal, in raising himself to the surface, directing his course ad libitum, and suddenly, by the shutting of his valves, dropping to the bottom.
Page 234 - Essay towards a Natural History of the County of Dublin. Dublin, 1772.
Page 232 - Paria, 1693, in- 4°, p. 376. POUPART. — Sur la progression du limaçon aquatique dont la coquille est tournée en spirale conique, in Journ.
Page 210 - Sur la formation de la coquille des Porcelaines et sur la faculté qu'ont leurs animaux de s'en détacher et de les quitter à différentes époques, in Journ.