A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 41
The external resemblance of these ephippia with the statoblasts of the Polyzoa is singularly striking ; but , with the very different origin of the two sets of bodies , we must take care not to attribute a greater share of significance ...
The external resemblance of these ephippia with the statoblasts of the Polyzoa is singularly striking ; but , with the very different origin of the two sets of bodies , we must take care not to attribute a greater share of significance ...
Página 42
... it is to be remembered that the funiculus has the power of giving origin to a very remarkable form of undoubted bud , the statoblast , which , until ulterior development is excited in it , has no nearer resemblance to an ordinary ...
... it is to be remembered that the funiculus has the power of giving origin to a very remarkable form of undoubted bud , the statoblast , which , until ulterior development is excited in it , has no nearer resemblance to an ordinary ...
Página 43
... steps which resulted in the separation of the Polyzoa from the Polypes , that the molluscan relations of the Polyzoa began at last to be recognised in an obvious resemblance between their organization and that of the Ascideæ .
... steps which resulted in the separation of the Polyzoa from the Polypes , that the molluscan relations of the Polyzoa began at last to be recognised in an obvious resemblance between their organization and that of the Ascideæ .
Página 46
We now need only a few unimportant modifications in order to complete the resemblance between the branchial sac of Clavelina and the tentacular crown of Plumatella ; we have only to imagine the oral extremity of the branchial sinus to ...
We now need only a few unimportant modifications in order to complete the resemblance between the branchial sac of Clavelina and the tentacular crown of Plumatella ; we have only to imagine the oral extremity of the branchial sinus to ...
Página 53
Mr. Hancock † had maintained the resemblance between the arms of the lophophore in the hippocrepian Polyzoa and the oral arms of the Brachiopoda , a resemblance singularly striking , and pointing to an important homological relation .
Mr. Hancock † had maintained the resemblance between the arms of the lophophore in the hippocrepian Polyzoa and the oral arms of the Brachiopoda , a resemblance singularly striking , and pointing to an important homological relation .
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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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives Hancock Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |