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 29
... exsertion is at once out of the question . Let us suppose the polypide withdrawn into the recesses of the cell , and ... exserted state of the polypide . This cup , therefore , which may plainly be seen under a proper illumi- nation to ...
... exsertion is at once out of the question . Let us suppose the polypide withdrawn into the recesses of the cell , and ... exserted state of the polypide . This cup , therefore , which may plainly be seen under a proper illumi- nation to ...
Página 30
... exserted condition of the polypide ; and in all the other genera which I have had an opportunity of examining it has , under favorable circumstances of observation , been more or less visible . In order to witness it in perfection , the ...
... exserted condition of the polypide ; and in all the other genera which I have had an opportunity of examining it has , under favorable circumstances of observation , been more or less visible . In order to witness it in perfection , the ...
Página 46
... exserted lophophore and tentacula of Plumatella ; while it is interesting to observe , that during the retracted state of the Polyzoon , the lophophore assumes the constant direction of the branchial sinus in the Tunicate . That the ...
... exserted lophophore and tentacula of Plumatella ; while it is interesting to observe , that during the retracted state of the Polyzoon , the lophophore assumes the constant direction of the branchial sinus in the Tunicate . That the ...
Página 49
... exserted state -- but rather corresponds to the point where the rectum penetrates the internal tunic in the Tunicata . The cloaca of the Tunicata is nothing more than the dorsal portion of the thoracic chamber in these animals , and is ...
... exserted state -- but rather corresponds to the point where the rectum penetrates the internal tunic in the Tunicata . The cloaca of the Tunicata is nothing more than the dorsal portion of the thoracic chamber in these animals , and is ...
Página 79
... exserted state ; these , indeed , must be very roughly handled to cause them to withdraw into their cells ; and the annoyance is no sooner removed than they again emerge . This exquisite little Polyzoon seems , in fact , capable of ...
... exserted state ; these , indeed , must be very roughly handled to cause them to withdraw into their cells ; and the annoyance is no sooner removed than they again emerge . This exquisite little Polyzoon seems , in fact , capable 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