A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 12
In Paludicella , whose transparent ectocyst admits of a distinct view of all the contained parts , the fibres are collected into numerous transverse bands ( Pl . X , figs . 3 , 4 , v ) , which we may trace throughout the whole extent of ...
In Paludicella , whose transparent ectocyst admits of a distinct view of all the contained parts , the fibres are collected into numerous transverse bands ( Pl . X , figs . 3 , 4 , v ) , which we may trace throughout the whole extent of ...
Página 14
M. Dumortier mentions it , and represents it in his figure , * while M. Van Beneden believes it to be an accidental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth ...
M. Dumortier mentions it , and represents it in his figure , * while M. Van Beneden believes it to be an accidental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth ...
Página 15
... Paludicella , which , with the exception of Urnatella ( ? ) , is the only fresh - water representative of the division with orbicular lophophore ( Gymnolæmata ) , presents some peculiarities , and should be examined by itself .
... Paludicella , which , with the exception of Urnatella ( ? ) , is the only fresh - water representative of the division with orbicular lophophore ( Gymnolæmata ) , presents some peculiarities , and should be examined by itself .
Página 17
In Paludicella articulata , the mouth ( Pl . X , fig . 5 ) is a perfectly circular orifice , with slightly projectile margin , and is totally destitute of the valve - like appendage which , unless Urnatella should prove an exception ...
In Paludicella articulata , the mouth ( Pl . X , fig . 5 ) is a perfectly circular orifice , with slightly projectile margin , and is totally destitute of the valve - like appendage which , unless Urnatella should prove an exception ...
Página 18
In Paludicella however , the stomach in the immediate neighbourhood of the pyloric orifice is lined with long vibratile cilia ( Pl . X , figs . 3 , 4 ) , by which portions of alimentary matter , pushed onwards by the peristaltic ...
In Paludicella however , the stomach in the immediate neighbourhood of the pyloric orifice is lined with long vibratile cilia ( Pl . X , figs . 3 , 4 ) , by which portions of alimentary matter , pushed onwards by the peristaltic ...
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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
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |