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 19
... Paludicella is the only fresh - water genus , if we except Urnatella , not yet sufficiently examined , in which not the slightest trace of bilaterality can be detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which ...
... Paludicella is the only fresh - water genus , if we except Urnatella , not yet sufficiently examined , in which not the slightest trace of bilaterality can be detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which ...
Página 21
... Paludicella , and possibly of Urnatella , the entire plume of tentacula is surrounded at its base by an exceedingly delicate water Phylactolæmata is probably united . In order to understand this relation , it is necessary to conceive of ...
... Paludicella , and possibly of Urnatella , the entire plume of tentacula is surrounded at its base by an exceedingly delicate water Phylactolæmata is probably united . In order to understand this relation , it is necessary to conceive of ...
Página 24
... Paludicella . a . Phylactolæmata . In all these the disposition of the muscles is exceedingly similar ; eight distinct sets may be considered as more or less positively demonstrated . ( 1. ) Retractor Muscles of the Polypide . These ...
... Paludicella . a . Phylactolæmata . In all these the disposition of the muscles is exceedingly similar ; eight distinct sets may be considered as more or less positively demonstrated . ( 1. ) Retractor Muscles of the Polypide . These ...
Página 26
... Paludicella , as well as in certain marine Polyzoa , is altogether in favour of their muscularity ; but they do not always present the appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or ...
... Paludicella , as well as in certain marine Polyzoa , is altogether in favour of their muscularity ; but they do not always present the appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or ...
Página 27
... Paludicella . The muscular system of Paludicella differs in some important points from that of the species with bilateral lophophores . The muscles may here be divided into five sets : ( 1. ) Retractor Muscle of the Polypide . This ( Pl ...
... Paludicella . The muscular system of Paludicella differs in some important points from that of the species with bilateral lophophores . The muscles may here be divided into five sets : ( 1. ) Retractor Muscle of the Polypide . This ( Pl ...
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