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 99
... septa are most apparent , indeed , I have met with specimens of the free variation of this species in which well - formed septa occurred between almost every cell , while the elongated claviform figure of the cells increased the ...
... septa are most apparent , indeed , I have met with specimens of the free variation of this species in which well - formed septa occurred between almost every cell , while the elongated claviform figure of the cells increased the ...
Página 107
... septa may be distinctly seen intersecting most of the cells near their origin . The polypides are small , and the calyciform membrane exhibits scarcely a trace of festooning . The statoblasts are elliptical , with a widely overlapping ...
... septa may be distinctly seen intersecting most of the cells near their origin . The polypides are small , and the calyciform membrane exhibits scarcely a trace of festooning . The statoblasts are elliptical , with a widely overlapping ...
Página 109
... septa , which are visible through the walls of the tube . I could find no statoblasts in any of the specimens I examined . In its peculiar mode of development in two groups of tubes , P. jugalis presents a striking resemblance to ...
... septa , which are visible through the walls of the tube . I could find no statoblasts in any of the specimens I examined . In its peculiar mode of development in two groups of tubes , P. jugalis presents a striking resemblance to ...
Página 113
... septa , together with several peculiarities in its internal structure already described , remove it by a well - marked interval from the other genera of the present mono- graph , and approximate it to certain marine representations of ...
... septa , together with several peculiarities in its internal structure already described , remove it by a well - marked interval from the other genera of the present mono- graph , and approximate it to certain marine representations of ...
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