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
... tentacular crown . This thin , non - contractile portion of the endocyst constitutes the tentacular sheath which encloses and protects the tentacula during the retracted state of the polypide . Near the spot where the endocyst passes ...
... tentacular crown . This thin , non - contractile portion of the endocyst constitutes the tentacular sheath which encloses and protects the tentacula during the retracted state of the polypide . Near the spot where the endocyst passes ...
Página 36
... tentacular sheath , within which , when viewed in front , may be seen an oval ring ( fig . 5 ) which is afterwards to become the lophophore of the polypide . This ring is at first quite simple , resembling a mere fold of thickish ...
... tentacular sheath , within which , when viewed in front , may be seen an oval ring ( fig . 5 ) which is afterwards to become the lophophore of the polypide . This ring is at first quite simple , resembling a mere fold of thickish ...
Página 49
... tentacular sheath or inverted tunic in the Polyzoa ( see figs . 8 , 9 , page 45 ) does to the corresponding parts of these during the retracted state of the animal ; it scarcely differs , in fact , from the tentacular sheath of the ...
... tentacular sheath or inverted tunic in the Polyzoa ( see figs . 8 , 9 , page 45 ) does to the corresponding parts of these during the retracted state of the animal ; it scarcely differs , in fact , from the tentacular sheath of 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