A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 44
... tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another place ‡ endeavoured to show that while the respiratory sac of the Ascidian has undoubtedly its homologue in the tentacular crown of the Polyzoon ...
... tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another place ‡ endeavoured to show that while the respiratory sac of the Ascidian has undoubtedly its homologue in the tentacular crown of the Polyzoon ...
Página 48
... tentacular crown in the Polyzoa . The gill of Doliolum thus constitutes the exact link by which the branchial sac of the Ascidia passes immediately into the tentacular crown of the Polyzoa . However interesting the hippocrepian Polyzoa ...
... tentacular crown in the Polyzoa . The gill of Doliolum thus constitutes the exact link by which the branchial sac of the Ascidia passes immediately into the tentacular crown of the Polyzoa . However interesting the hippocrepian Polyzoa ...
Página 49
... tentacular crown is projected and retracted ; but this is equivalent to the respiratory and cloacal orifices of the Tunicata united ; and the point where the rectum opens externally in the Polyzoa is not therefore , as supposed by Van ...
... tentacular crown is projected and retracted ; but this is equivalent to the respiratory and cloacal orifices of the Tunicata united ; and the point where the rectum opens externally in the Polyzoa is not therefore , as supposed by Van ...
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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 longitudinal 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