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 22
... perigastric space , and interior of the tentacula and lophophore , all freely communicate with one another , and are filled with a clear fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be ...
... perigastric space , and interior of the tentacula and lophophore , all freely communicate with one another , and are filled with a clear fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be ...
Página 37
... perigastric space . It is evidently composed of a mass of minute cells with a more condensed peripheral layer . It now increases in size , and a clear , oval space becomes apparent towards one side of it ( fig . 11 ) . This space soon ...
... perigastric space . It is evidently composed of a mass of minute cells with a more condensed peripheral layer . It now increases in size , and a clear , oval space becomes apparent towards one side of it ( fig . 11 ) . This space soon ...
Página 57
... perigastric space , the alimentary canal and vessels being fixed in the stem , and embraced by its walls , so as to leave little or no intervening space , while the perigastric fluid is here replaced by the true blood in its proper ...
... perigastric space , the alimentary canal and vessels being fixed in the stem , and embraced by its walls , so as to leave little or no intervening space , while the perigastric fluid is here replaced by the true blood in its proper ...
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