A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 16
The cavity in its interior communicates through an opening ( e ' ) in the
lophophore with the perigastric space ; the walls which are turned towards the
mouth are thick , and densely clothed on their external surface with vibratile cilia ,
while ...
The cavity in its interior communicates through an opening ( e ' ) in the
lophophore with the perigastric space ; the walls which are turned towards the
mouth are thick , and densely clothed on their external surface with vibratile cilia ,
while ...
Página 17
The intestine is very wide at its origin , and passes up along the side of the
cardiac cavity and esophagus , rapidly diminishing in diameter till it terminates in
a distinct anus by perforating the tentacular sheath just below the mouth , and at
the ...
The intestine is very wide at its origin , and passes up along the side of the
cardiac cavity and esophagus , rapidly diminishing in diameter till it terminates in
a distinct anus by perforating the tentacular sheath just below the mouth , and at
the ...
Página 36
By this time the gemma has become considerably elongated and has acquired a
clavate form , and its cavity begins to be cut off from that of the parent - cell by the
formation of a septum . We next perceive that a portion of the lining tunic , near ...
By this time the gemma has become considerably elongated and has acquired a
clavate form , and its cavity begins to be cut off from that of the parent - cell by the
formation of a septum . We next perceive that a portion of the lining tunic , near ...
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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 canal cavity cell characters 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 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 | Universidad de Michigan |
| Digitalizado | 13 Feb. 2012 |
| Largo | 119 páginas |
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