A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 12
... peculiar fibres ( Pl . II , fig . 10 ) are also developed in the endocyst . These are situated on its inner surface , where they constitute a well - marked layer composed of a network of transverse and longitudinal fibres over the whole ...
... peculiar fibres ( Pl . II , fig . 10 ) are also developed in the endocyst . These are situated on its inner surface , where they constitute a well - marked layer composed of a network of transverse and longitudinal fibres over the whole ...
Página 13
... peculiar corpuscles in their interior . These corpuscles are not confined to the endocyst , but are also found at the same time in other tissues , especially in the substance of the funiculus , which , as will be afterwards shown ...
... peculiar corpuscles in their interior . These corpuscles are not confined to the endocyst , but are also found at the same time in other tissues , especially in the substance of the funiculus , which , as will be afterwards shown ...
Página 14
... peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of great delicacy ...
... peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of great delicacy ...
Página 16
... peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its interior communicates through an opening ( e ) in the lophophore with the ...
... peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its interior communicates through an opening ( e ) in the lophophore with the ...
Página 18
... peculiar peristaltic action of the walls is more marked in it than in any other part of the gastric cavity , while it is every now and then separated from the rest of this cavity by a momentary hour - glass constriction . In the ...
... peculiar peristaltic action of the walls is more marked in it than in any other part of the gastric cavity , while it is every now and then separated from the rest of this cavity by a momentary hour - glass constriction . In the ...
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