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 35
... corresponding to the aperture . It is thus carried through the surrounding fluid by the vibration of its cilia , performing rapid and elegant motions , always swimming with the broad end foremost , and at the same time revolving ...
... corresponding to the aperture . It is thus carried through the surrounding fluid by the vibration of its cilia , performing rapid and elegant motions , always swimming with the broad end foremost , and at the same time revolving ...
Página 37
... corresponds to the interval between the two arms of the rudimental lophophore . By this time the young polypide has become removed from the surface of the endocyst of the parent cell , to which it is now only connected by a membranous ...
... corresponds to the interval between the two arms of the rudimental lophophore . By this time the young polypide has become removed from the surface of the endocyst of the parent cell , to which it is now only connected by a membranous ...
Página 44
... correspond to the tentacula of the Polyzoon , while the transverse bars in the sac of the Ascidian must be considered as becoming extinct in the tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another ...
... correspond to the tentacula of the Polyzoon , while the transverse bars in the sac of the Ascidian must be considered as becoming extinct in the tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another ...
Página 45
... correspond to the ciliated tentacula of the Polyzoon ; the delicate membrane which constitutes the proper walls of the respiratory sac , to the interior of which the respiratory bars of the Ascidian are adherent , and which is pierced ...
... correspond to the ciliated tentacula of the Polyzoon ; the delicate membrane which constitutes the proper walls of the respiratory sac , to the interior of which the respiratory bars of the Ascidian are adherent , and which is pierced ...
Página 47
... corresponding extremities of those of the other by a considerable space , and thus present a marked approach to the open condition which characterises the tentacular crown of the Polyzoa . According to Lesieur , in a species described ...
... corresponding extremities of those of the other by a considerable space , and thus present a marked approach to the open condition which characterises the tentacular crown of the Polyzoa . According to Lesieur , in a species described ...
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