A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
... widely separated from each other by an intervening substance towards the
posterior part of the cænæcium , but more closely approximated towards the
orifices . These cells are filled with a perfectly colourless and transparent fluid .
... widely separated from each other by an intervening substance towards the
posterior part of the cænæcium , but more closely approximated towards the
orifices . These cells are filled with a perfectly colourless and transparent fluid .
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 18
... no longitudinal rugæ . The mouth and upper part of the æsophagus are in all
the genera clothed with vibratile cilia , but I could detect no appearance of cilia
further than a short distance down this tube . The structure of the intestine closely
...
... no longitudinal rugæ . The mouth and upper part of the æsophagus are in all
the genera clothed with vibratile cilia , but I could detect no appearance of cilia
further than a short distance down this tube . The structure of the intestine closely
...
Página 36
This sac is closely adherent to the polypide behind the lophophore , but upon the
lophophore and tentacula it has become free , and here constitutes the tentacular
sheath . Some delicate fibres , the rudiments of the retractor of the polypide ...
This sac is closely adherent to the polypide behind the lophophore , but upon the
lophophore and tentacula it has become free , and here constitutes the tentacular
sheath . Some delicate fibres , the rudiments of the retractor of the polypide ...
Página 59
It was in the form of large fungoid or spongy masses , and was composed of
multitudes of closely compacted tubes , each of which opened upon the surface
of the mass by a pentagonal or hexagonal orifice , which allowed of the exsertion
of a ...
It was in the form of large fungoid or spongy masses , and was composed of
multitudes of closely compacted tubes , each of which opened upon the surface
of the mass by a pentagonal or hexagonal orifice , which allowed of the exsertion
of a ...
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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 |
| Exportar cita | BiBTeX EndNote RefMan |