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 23
... true mode in which the external water passes into the perigastric space . The real signification of the perigastric fluid is a point whose determination must be of great importance in the physiology of the Polyzoa . As has just been ...
... true mode in which the external water passes into the perigastric space . The real signification of the perigastric fluid is a point whose determination must be of great importance in the physiology of the Polyzoa . As has just been ...
Página 41
... true ova ; but admits at the same time that they are possibly agamic . The external resemblance of these ephippia with the statoblasts of the Polyzoa is singularly striking ; but , with the very different origin of the two sets of ...
... true ova ; but admits at the same time that they are possibly agamic . The external resemblance of these ephippia with the statoblasts of the Polyzoa is singularly striking ; but , with the very different origin of the two sets of ...
Página 95
... true Tubularia repens , and is probably identical with it , for the number of tentacula which he ascribes to the species is evidently the result of having observed the polypide in a very partially exserted state , and therefore goes for ...
... true Tubularia repens , and is probably identical with it , for the number of tentacula which he ascribes to the species is evidently the result of having observed the polypide in a very partially exserted state , and therefore goes for ...
Otras ediciones - Ver todas
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