A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
Página 13
In Cristatella , where the endocyst constitutes the whole of the cænæcium , it
presents below a flattened disc , which closely resembles the foot of a
gasteropodous mollusc , and on which this singular colony creeps about on the
stems and ...
In Cristatella , where the endocyst constitutes the whole of the cænæcium , it
presents below a flattened disc , which closely resembles the foot of a
gasteropodous mollusc , and on which this singular colony creeps about on the
stems and ...
Página 15
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristatella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristatella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
Página 18
In Cristatella , the cells of the internal layer corresponding to the middle layer of
the stomach are large , and filled , in the well - fed animal , with a clear greenish -
blue fluid . With the exception of the mouth and upper portion of the oesophagus
...
In Cristatella , the cells of the internal layer corresponding to the middle layer of
the stomach are large , and filled , in the well - fed animal , with a clear greenish -
blue fluid . With the exception of the mouth and upper portion of the oesophagus
...
Página 19
It was these excrementitious pellets that Turpin mistook for unarmed ova in
Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular
crown and the walls of the perigastric space would seem , among the Polyzoa ,
chiefly to ...
It was these excrementitious pellets that Turpin mistook for unarmed ova in
Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular
crown and the walls of the perigastric space would seem , among the Polyzoa ,
chiefly to ...
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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
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding 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 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 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 | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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