A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... polypide as well as the cœnœcium , believing that the latter will by itself convey but a very imperfect idea of the real character of these beautiful little animals . With regard to the few species which I have not had an opportunity of ...
... polypide as well as the cœnœcium , believing that the latter will by itself convey but a very imperfect idea of the real character of these beautiful little animals . With regard to the few species which I have not had an opportunity of ...
Página 8
... Polypide . * To the common dermal system of a colony , which , as well as the solid basis of the true polypes , was ... polypide is lodged . The part of the cell through which the polypide admits of protrusion and retraction is the ...
... Polypide . * To the common dermal system of a colony , which , as well as the solid basis of the true polypes , was ... polypide is lodged . The part of the cell through which the polypide admits of protrusion and retraction is the ...
Página 10
... Polypide only partially re- tractile ? Polypide completely retractile ; evagination of tentacular sheath imperfect . Polypide completely retractile ; evagination perfect ; orifice of cell destitute of move- able appendage . Polypide ...
... Polypide only partially re- tractile ? Polypide completely retractile ; evagination of tentacular sheath imperfect . Polypide completely retractile ; evagination perfect ; orifice of cell destitute of move- able appendage . Polypide ...
Página 11
... polypide , and its cavity is either shut off from those of the neighbouring chambers , or freely communicates with them . In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part ...
... polypide , and its cavity is either shut off from those of the neighbouring chambers , or freely communicates with them . In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part ...
Página 12
... polypide . Near the spot where the endocyst passes into the tentacular sheath , there appears to exist , at least in Lophopus , a circular canal , which here passes trans- versely round the endocyst . The presence of this canal is ...
... polypide . Near the spot where the endocyst passes into the tentacular sheath , there appears to exist , at least in Lophopus , a circular canal , which here passes trans- versely round the endocyst . The presence of this canal is ...
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