A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 19
Paludicella is the only fresh - water genus , if we except Urnatella , not yet
sufficiently examined , in which not the slightest trace of bilaterality can be
detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which presents a
condition of the ...
Paludicella is the only fresh - water genus , if we except Urnatella , not yet
sufficiently examined , in which not the slightest trace of bilaterality can be
detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which presents a
condition of the ...
Página 21
In all the fresh - water genera , with the exception of Paludicella , and possibly of
Urnatella , the entire plume of tentacula is surrounded at its base by an
exceedingly delicate water Phylactolæmata is probably united . In order to
understand this ...
In all the fresh - water genera , with the exception of Paludicella , and possibly of
Urnatella , the entire plume of tentacula is surrounded at its base by an
exceedingly delicate water Phylactolæmata is probably united . In order to
understand this ...
Página 24
... indicate the presence of vibratile cilia in this situation . ( 4. ) Muscular System .
The muscular system is highly developed ; we shall first consider it in the
phylactolæma . tous Polyzoa , and afterwards attend to its disposition in
Paludicella . a .
... indicate the presence of vibratile cilia in this situation . ( 4. ) Muscular System .
The muscular system is highly developed ; we shall first consider it in the
phylactolæma . tous Polyzoa , and afterwards attend to its disposition in
Paludicella . a .
Página 26
There is certainly no reason why muscular fibres may not be developed in them ,
and the condition of the corresponding parts in Paludicella , as well as in certain
marine Polyzoa , is altogether in favour of their muscularity ; but they do not ...
There is certainly no reason why muscular fibres may not be developed in them ,
and the condition of the corresponding parts in Paludicella , as well as in certain
marine Polyzoa , is altogether in favour of their muscularity ; but they do not ...
Página 27
... alimentary canal , and need not be further referred to here . 6. Muscles of
Paludicella . The muscular system of Paludicella differs in some important points
from that of the species with bilateral lophophores . The muscles may here be
divided ...
... alimentary canal , and need not be further referred to here . 6. Muscles of
Paludicella . The muscular system of Paludicella differs in some important points
from that of the species with bilateral lophophores . The muscles may here be
divided ...
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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 canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium 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 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 represented 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 | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
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