A Manual of the Land and Fresh-water Shells of the British IslandsLongman, Orme, Brown, Green, and Longmans, 1840 - 324 páginas |
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Página 73
... base of two spirally twisted ciliated arms , between the two leaves of the mantle , which are covered with two separate shelly valves : they live attached to other marine bodies . IV . Pteropodes . - Having a prominent head , with one ...
... base of two spirally twisted ciliated arms , between the two leaves of the mantle , which are covered with two separate shelly valves : they live attached to other marine bodies . IV . Pteropodes . - Having a prominent head , with one ...
Página 79
... base of the tentacles : diœcious . Fam . 2. Melaniada , - animal ; trunk elongate : shell ovate ; mouth ovate , not continued ; operculum horny , ovate , spiral . ( f . 4—6 . ) Fam . 3. Paludinide , - animal ; gills enclosed : shell ...
... base of the tentacles : diœcious . Fam . 2. Melaniada , - animal ; trunk elongate : shell ovate ; mouth ovate , not continued ; operculum horny , ovate , spiral . ( f . 4—6 . ) Fam . 3. Paludinide , - animal ; gills enclosed : shell ...
Página 80
... base ( p . 78. f . 1 , 2. ) ; the shell ovate - conical ; mouth half - ovate , with a flattened transverse sharp - edged inner lip ; the operculum spiral , half - ovate , and furnished with two internal processes on its front edge ...
... base ( p . 78. f . 1 , 2. ) ; the shell ovate - conical ; mouth half - ovate , with a flattened transverse sharp - edged inner lip ; the operculum spiral , half - ovate , and furnished with two internal processes on its front edge ...
Página 85
... base . This family contains only one rather anomalous British fresh - water genus among its numerous marine ones . There are several other fluviatile genera , as Melania , Melanopsis , and Potamides , which are now only found in the ...
... base . This family contains only one rather anomalous British fresh - water genus among its numerous marine ones . There are several other fluviatile genera , as Melania , Melanopsis , and Potamides , which are now only found in the ...
Página 86
... base . It would appear as if there were in reality no tentacula , and only the tubercle , common to many Mollusca , at the base of the tenta- cula , a little more developed than usual . " I am in- clined to retain my former theory ; for ...
... base . It would appear as if there were in reality no tentacula , and only the tubercle , common to many Mollusca , at the base of the tenta- cula , a little more developed than usual . " I am in- clined to retain my former theory ; for ...
Outras edições - Ver tudo
Amanual of the Land and Fresh-water Shells of the British Islands, with ... William Turton Visualização integral - 1840 |
Manual of the Land and Fresh-water Shells of the British Islands: With ... William Turton Visualização integral - 1857 |
Manual of the Land and Fresh-water Shells of the British Islands: With ... William Turton Visualização integral - 1857 |
Palavras e frases frequentes
2d Edition Alder animal aperture bands Brard Brit British brown Bulimus Carychium minimum Clausilia cloth colour Conch conchologists conical convex Cyclas Cyclostoma Dict Drap Draparnaud edge elongate Engravings epiphragm Fauna Fcap Férus Férussac Foolscap 8vo foot genus Helix Hist History horn-colour hortensis Icon Inhab J. C. Loudon Jeffreys Journ Leach Limax Limnæus Linn London longitudinal mantle margin Moll Mollusca Mont Montagu mouth Müller nearly Nilson oblique oblong observes operculum outer lip oval pale Paludina periostraca peristome Pfeiffer Physa Physa fontinalis pillar Pisidium Pisidium amnicum Planorbis Planorbis carinatus Plates Pupa Rossm rounded Shell ovate slightly Snail Sowerby species specimens spiral striæ striated Sturm Succinea teeth tentacles thickened thin Trans transparent Turbo Turton umbilicus Unio Valvata Valvata cristata variety ventricose Verm Vertigo Vertigo alpestris Vignette Titles Vitrina pellucida vols volutions whorls Wood Woodcuts yellowish young shells Zonites Zool
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