A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
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Página 8
... internal that of Endocyst . § The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar valve - like organ which arches over the mouth in most of the fresh ...
... internal that of Endocyst . § The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar valve - like organ which arches over the mouth in most of the fresh ...
Página 11
... internal , the endocyst , which is always soft , transparent , and contractile ; and an external , the ectocyst , which varies greatly in character in the different genera . The endocyst ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX ...
... internal , the endocyst , which is always soft , transparent , and contractile ; and an external , the ectocyst , which varies greatly in character in the different genera . The endocyst ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX ...
Página 17
... Internally is a yellowish - brown layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugæ . These rugæ become less decided towards the fundus of the stomach , and in Paludicella they are entirely absent . This internal ...
... Internally is a yellowish - brown layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugæ . These rugæ become less decided towards the fundus of the stomach , and in Paludicella they are entirely absent . This internal ...
Página 18
... internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the peculiar peristaltic action of the walls is more marked in it than in any other part of the gastric cavity , while ...
... internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the peculiar peristaltic action of the walls is more marked in it than in any other part of the gastric cavity , while ...
Página 20
... internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces within ...
... internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces within ...
Otras ediciones - Ver todas
A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
A Monograph of the Fresh-Water Polyzoa, Including All the Known Species ... George James Allman Sin vista previa disponible - 2009 |
Términos y frases comunes
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph Zoophytes