A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 29
This second portion of the invaginated membrane , which in the retracted state
constitutes the tentacular sheath , continues to be carried outwards by the
advancing polypide , the posterior parieto - vaginal muscles slowly relaxing to
admit of it .
This second portion of the invaginated membrane , which in the retracted state
constitutes the tentacular sheath , continues to be carried outwards by the
advancing polypide , the posterior parieto - vaginal muscles slowly relaxing to
admit of it .
Página 33
restraining membrane of the ovary , and escape into the cavity of the endocyst .
Attached by one extremity to the external surface of the stomach , near the
commencement of the intestine , and by the other attached to the walls of the cell
, and ...
restraining membrane of the ovary , and escape into the cavity of the endocyst .
Attached by one extremity to the external surface of the stomach , near the
commencement of the intestine , and by the other attached to the walls of the cell
, and ...
Página
The same more advanced ; the enveloping membrane is destitute of cilia , and
the spines have begun to grow out from the margin of the disc . 5. The same , still
further advanced ; the spines have impinged on the enveloping membrane . 6.
The same more advanced ; the enveloping membrane is destitute of cilia , and
the spines have begun to grow out from the margin of the disc . 5. The same , still
further advanced ; the spines have impinged on the enveloping membrane . 6.
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A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous Cristatella crown 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 Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs 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, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | Universidad de Illinois en Urbana-Champaign |
| Digitalizado | 13 Oct. 2015 |
| Largo | 119 páginas |
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