A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
In In every instance * the polypide can be protruded from its cell , and again
withdrawn into it , and the part through which it thus passes outwards and
inwards , as has already been defined , is the orifice of the cell . It must not ,
however , be ...
In In every instance * the polypide can be protruded from its cell , and again
withdrawn into it , and the part through which it thus passes outwards and
inwards , as has already been defined , is the orifice of the cell . It must not ,
however , be ...
Página 12
Near the spot where the endocyst passes into the tentacular sheath , there
appears to exist , at least in Lophopus , a circular canal , which here passes
transversely round the endocyst . The presence of this canal is revealed by
peculiar ...
Near the spot where the endocyst passes into the tentacular sheath , there
appears to exist , at least in Lophopus , a circular canal , which here passes
transversely round the endocyst . The presence of this canal is revealed by
peculiar ...
Página 13
... aperture of the cell , and gradually narrows as it passes backwards , when it
soon assumes the appearance of a prominent keel , and then loses its
transparency by the deposition of earthy matter , as in the rest of the ectocyst ( Pl .
VIII , figs .
... aperture of the cell , and gradually narrows as it passes backwards , when it
soon assumes the appearance of a prominent keel , and then loses its
transparency by the deposition of earthy matter , as in the rest of the ectocyst ( Pl .
VIII , figs .
Página 17
The intestine is very wide at its origin , and passes up along the side of the
cardiac cavity and æsophagus , 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 æsophagus , rapidly diminishing in diameter till it terminates in
a distinct anus by perforating the tentacular sheath just below the mouth , and at
the ...
Página 20
This membrane passes uninterruptedly from the extremity of one arm of the
lophophore to that of the other , thus binding together the two tentacula which
spring from the points of the arms , and completing the tentacular crater so as
entirely to ...
This membrane passes uninterruptedly from the extremity of one arm of the
lophophore to that of the other , thus binding together the two tentacula which
spring from the points of the arms , and completing the tentacular crater so as
entirely to ...
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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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