A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 8
The part of the cell through which the polypide admits of protrusion and retraction is the orifice of the cell . * Πολυποὺς , εἶδος . † Κοινὸς , οἰκίον . † Εκτος , κύστις . Επι , στομα . § ̓́Ενδον , κύστις . || Λόφος , φορέω .
The part of the cell through which the polypide admits of protrusion and retraction is the orifice of the cell . * Πολυποὺς , εἶδος . † Κοινὸς , οἰκίον . † Εκτος , κύστις . Επι , στομα . § ̓́Ενδον , κύστις . || Λόφος , φορέω .
Página 10
Polypide completely retractile ; evagination perfect ; orifice of cell destitute of moveable appendage . Polypide completely retractile ; evagination perfect ; a circle of setæ attached to the ininvertible portion , and acting as an ...
Polypide completely retractile ; evagination perfect ; orifice of cell destitute of moveable appendage . Polypide completely retractile ; evagination perfect ; a circle of setæ attached to the ininvertible portion , and acting as an ...
Página 11
In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part through which it thus passes outwards and inwards , as has already been defined , is the orifice of the cell .
In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part through which it thus passes outwards and inwards , as has already been defined , is the orifice of the cell .
Página 13
The perfectly transparent wide origin of this line . gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent ...
The perfectly transparent wide origin of this line . gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent ...
Página 14
... investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent membrane , free from earthy deposit , and of a deep brown colour . Towards the orifice ...
... investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent membrane , free from earthy deposit , and of a deep brown colour . Towards the orifice ...
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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