A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Resultados 1-3 de 45
Página 20
... tentacula . The external layer consists of rounded cells filled with a colourless fluid , and often presenting a bright nucleus . Some of those cells which lie upon the back of the tentacle become in certain genera enlarged , giving a ...
... tentacula . The external layer consists of rounded cells filled with a colourless fluid , and often presenting a bright nucleus . Some of those cells which lie upon the back of the tentacle become in certain genera enlarged , giving a ...
Página 36
... tentacula it has become free , and here constitutes the tentacular sheath . Some delicate fibres , the rudiments of the retractor of the polypide , may now be plainly seen extending from just behind the lophophore to the walls of the ...
... tentacula it has become free , and here constitutes the tentacular sheath . Some delicate fibres , the rudiments of the retractor of the polypide , may now be plainly seen extending from just behind the lophophore to the walls of the ...
Página 46
... tentacula in Fredericella and the Hippocrepian Polyzoa . This correspondence will be rendered more obvious by ... tentacula of Plumatella ; while it is interesting to observe , that during the retracted state of the Polyzoon , the ...
... tentacula in Fredericella and the Hippocrepian Polyzoa . This correspondence will be rendered more obvious by ... tentacula of Plumatella ; while it is interesting to observe , that during the retracted state of the Polyzoon , the ...
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 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 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