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 40
... attached to the internal surface of the walls , to which they adhere by means of a peculiar cement in which no trace of structure can be detected . These differ also from the unattached statoblasts in shape , being much broader in ...
... attached to the internal surface of the walls , to which they adhere by means of a peculiar cement in which no trace of structure can be detected . These differ also from the unattached statoblasts in shape , being much broader in ...
Página 46
... attached along the branchial sinus in Clavelina , and certain other Tunicates , and thence project into the cavity of the branchial sac . In Salpa , the languets are reduced to a single one ; that , however , which remains in this genus ...
... attached along the branchial sinus in Clavelina , and certain other Tunicates , and thence project into the cavity of the branchial sac . In Salpa , the languets are reduced to a single one ; that , however , which remains in this genus ...
Página 49
... attached to the alimentary canal just behind the mouth and anus ; it thus holds to the surrounding parts in the Tunicata exactly the same rela- tion that the tentacular sheath or inverted tunic in the Polyzoa ( see figs . 8 , 9 , page ...
... attached to the alimentary canal just behind the mouth and anus ; it thus holds to the surrounding parts in the Tunicata exactly the same rela- tion that the tentacular sheath or inverted tunic in the Polyzoa ( see figs . 8 , 9 , page ...
Página 57
... attached to the fundus of the stomach ; this last organ , however , he supposes to be a muscle destined , like the true retractors , for the withdrawal of the polypide into its cell . He has shown the connection between the polypide and ...
... attached to the fundus of the stomach ; this last organ , however , he supposes to be a muscle destined , like the true retractors , for the withdrawal of the polypide into its cell . He has shown the connection between the polypide and ...
Página 58
... attached form . In his account of the internal structure , though he had the advantage of Trembley's and Baker's observations on the " Polype à Panache , " he falls far behind these naturalists in accuracy . He observed the statoblasts ...
... attached form . In his account of the internal structure , though he had the advantage of Trembley's and Baker's observations on the " Polype à Panache , " he falls far behind these naturalists in accuracy . He observed the statoblasts ...
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