A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 6
... and the Polyzoa , therefore , long continued to be classed with the Polypes , of which they were still considered as a group , though with distinct peculiarities , through which the Polypes manifested an affinity with the Tunicata .
... and the Polyzoa , therefore , long continued to be classed with the Polypes , of which they were still considered as a group , though with distinct peculiarities , through which the Polypes manifested an affinity with the Tunicata .
Página 15
The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have never succeeded in obtaining satisfactory evidence of its existence in any of the tissues of ...
The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have never succeeded in obtaining satisfactory evidence of its existence in any of the tissues of ...
Página 43
One of these , the Molluscoida , included the Polyzoa and Tunicata ; the other , the Mollusca proper , embraced all the other members of the molluscan sub - kingdom . The affinities of the Tunicata and Polyzoa being thus fully ...
One of these , the Molluscoida , included the Polyzoa and Tunicata ; the other , the Mollusca proper , embraced all the other members of the molluscan sub - kingdom . The affinities of the Tunicata and Polyzoa being thus fully ...
Página 46
This ganglion is certainly homologous in the Tunicata and Polyzoa , and it is manifestly it , and not the mouth , that determines the place of the persistent languet . We now need only a few unimportant modifications in order to ...
This ganglion is certainly homologous in the Tunicata and Polyzoa , and it is manifestly it , and not the mouth , that determines the place of the persistent languet . We now need only a few unimportant modifications in order to ...
Página 47
Now nearly all the changes which we have thus hypothetically supposed to take place in Clavelina , in order to convert its branchial sac into the tentacular crown of Plumatella , do actually occur in other genera of Tunicata , some in ...
Now nearly all the changes which we have thus hypothetically supposed to take place in Clavelina , in order to convert its branchial sac into the tentacular crown of Plumatella , do actually occur in other genera of Tunicata , some in ...
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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 |
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