A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 20
... the two tentacula which spring from the points of the arms , and completing the
tentacular crater so as entirely to disguise the hippocrepian character , and give
to the crown of tentacula the form presented by the infundibulate genera .
... the two tentacula which spring from the points of the arms , and completing the
tentacular crater so as entirely to disguise the hippocrepian character , and give
to the crown of tentacula the form presented by the infundibulate genera .
Página 29
One of these is placed within the other . and gives rise to the membranous cup
which projects from the lips of the orifice in the exserted state of the polypide .
This cup , therefore , which may plainly be seen under a proper illumination to
consist ...
One of these is placed within the other . and gives rise to the membranous cup
which projects from the lips of the orifice in the exserted state of the polypide .
This cup , therefore , which may plainly be seen under a proper illumination to
consist ...
Página 31
When it arrives at the extremity of the arm it turns on itself , and in its retrograde
course gives off similar filaments to the tentacula placed upon the inner margin . I
have thus traced it back to the base of the arms , but have here failed in my ...
When it arrives at the extremity of the arm it turns on itself , and in its retrograde
course gives off similar filaments to the tentacula placed upon the inner margin . I
have thus traced it back to the base of the arms , but have here failed in my ...
Página 36
9 ) find little wanting to give to the polypide and its cell the form presented by the
adult . Up to this period the young polypide has been entirely shut off from all
communication with the external water , and its nutrition must have been effected
...
9 ) find little wanting to give to the polypide and its cell the form presented by the
adult . Up to this period the young polypide has been entirely shut off from all
communication with the external water , and its nutrition must have been effected
...
Página 37
... to be presently mentioned , I propose to give the name of Statoblasts . From the
earliest period that the fresh - water Polyzoa became an object of study , the
statoblasts attracted the attention of observers . Their form is not exactly the same
in ...
... to be presently mentioned , I propose to give the name of Statoblasts . From the
earliest period that the fresh - water Polyzoa became an object of study , the
statoblasts attracted the attention of observers . Their form is not exactly the same
in ...
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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 ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cćnćcium 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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