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 34
... young polypides , which are suspended from the inner surface of the unciliated portion . The arms of the lophophore in the young polypides are at first but slightly developed , and there is as yet no trace of tentacula ( Pl . XI , fig ...
... young polypides , which are suspended from the inner surface of the unciliated portion . The arms of the lophophore in the young polypides are at first but slightly developed , and there is as yet no trace of tentacula ( Pl . XI , fig ...
Página 39
... young polyzoon , is henceforth , in consequence of the opacity of the covering , impossible . The statoblast has now acquired the complete form characteristic of the species , and , breaking loose from the funiculus , it falls free into ...
... young polyzoon , is henceforth , in consequence of the opacity of the covering , impossible . The statoblast has now acquired the complete form characteristic of the species , and , breaking loose from the funiculus , it falls free into ...
Página 67
... young one , instead of having the plane of dehiscence , as is really the case , parallel to the faces . He is at first at a loss to explain how such formidably armed " eggs " could be brought forth with impunity , and he asks : " Quelle ...
... young one , instead of having the plane of dehiscence , as is really the case , parallel to the faces . He is at first at a loss to explain how such formidably armed " eggs " could be brought forth with impunity , and he asks : " Quelle ...
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