A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 14
In certain species of fresh - water Polyzoa , transverse septa exist between the
cells . ... In Paludicella they acquire their maximum in development and
constancy ; they occur here between every cell , and consist of an annular
process , which ...
In certain species of fresh - water Polyzoa , transverse septa exist between the
cells . ... In Paludicella they acquire their maximum in development and
constancy ; they occur here between every cell , and consist of an annular
process , which ...
Página 32
In Alcyonella and Paludicella , I have succeeded in making a careful examination
of the generative system . In each of these both ovary and testis are found in the
same cell . * During the months of July and August there may frequently be seen
...
In Alcyonella and Paludicella , I have succeeded in making a careful examination
of the generative system . In each of these both ovary and testis are found in the
same cell . * During the months of July and August there may frequently be seen
...
Página 36
fleshy lining , continuous with the endocyst ; this internal tunic has numerous
large , round , nucleated cells distributed through its substance , and ... The two
tunics of the gemma are to become the ectocyst and endocyst of the future cell .
fleshy lining , continuous with the endocyst ; this internal tunic has numerous
large , round , nucleated cells distributed through its substance , and ... The two
tunics of the gemma are to become the ectocyst and endocyst of the future cell .
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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 canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British 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 Hist 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 similar 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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