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 31
... ciliated organ ‡ in the neighbourhood of the ganglion , nothing which can with any real probability be referred to an organ of special sense has as yet presented itself in any polyzoon . * Milne - Edwards , Recherches Anatomiques ...
... ciliated organ ‡ in the neighbourhood of the ganglion , nothing which can with any real probability be referred to an organ of special sense has as yet presented itself in any polyzoon . * Milne - Edwards , Recherches Anatomiques ...
Página 33
... cilia with which it is invested . As development proceeds , we find the ciliated embryo , while still confined within the coverings of the egg , presenting in some part of its surface an opening which leads into the central cavity ; and ...
... cilia with which it is invested . As development proceeds , we find the ciliated embryo , while still confined within the coverings of the egg , presenting in some part of its surface an opening which leads into the central cavity ; and ...
Página 34
... ciliated , the anterior destitute of cilia and partially or entirely pushed back into the posterior by a process of invagination ; while the sac carries within it two young polypides , which are suspended from the inner surface of the ...
... ciliated , the anterior destitute of cilia and partially or entirely pushed back into the posterior by a process of invagination ; while the sac carries within it two young polypides , which are suspended from the inner surface of the ...
Página 35
... ciliated , with which it has become directly continuous , while the cilia themselves disappear from the ciliated portion , and the entire sac becomes enveloped in an ectocyst , to constitute the cell of the adult polyzoon . The ...
... ciliated , with which it has become directly continuous , while the cilia themselves disappear from the ciliated portion , and the entire sac becomes enveloped in an ectocyst , to constitute the cell of the adult polyzoon . The ...
Página 39
... cilia , except on the tentacula ; and the motions of the young animal seem to be quite passive , except so far as they may be influenced by the ciliary action of the tentacula . At the period of its escape it possesses all the essential ...
... cilia , except on the tentacula ; and the motions of the young animal seem to be quite passive , except so far as they may be influenced by the ciliary action of the tentacula . At the period of its escape it possesses all the essential ...
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