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 64
... closely with those of Rösel , and he joins with this naturalist in denying the accuracy of Trembley's description of the digestive organs of the " Polype à Panache . " He does not admit the existence of distinct muscles , and maintains ...
... closely with those of Rösel , and he joins with this naturalist in denying the accuracy of Trembley's description of the digestive organs of the " Polype à Panache . " He does not admit the existence of distinct muscles , and maintains ...
Página 89
... closely applied hexagonal or pentagonal orifices . The whole production now assumes the appearance of a spongy , honeycomb - like mass , and this has not unfrequently been mistaken for a fresh - water sponge . A vertical section shows ...
... closely applied hexagonal or pentagonal orifices . The whole production now assumes the appearance of a spongy , honeycomb - like mass , and this has not unfrequently been mistaken for a fresh - water sponge . A vertical section shows ...
Página 99
... closely adherent to the stone or other object to which it happens to be attached , as long as this affords it sufficient surface for adhesion , but becoming free , and assuming the form of the second variation as soon as , in the ...
... closely adherent to the stone or other object to which it happens to be attached , as long as this affords it sufficient surface for adhesion , but becoming free , and assuming the form of the second variation as soon as , in the ...
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