A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 10
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh - water ) . Polypide completely retractile ; evagination of tentacular sheath
imperfect .
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh - water ) . Polypide completely retractile ; evagination of tentacular sheath
imperfect .
Página 12
6 ) . In this condition it continues till it terminates by being attached to the base of
the tentacular crown . This thin , non - contractile portion of the endocyst
constitutes the tentacular sheath which encloses and protects the tentacula
during the ...
6 ) . In this condition it continues till it terminates by being attached to the base of
the tentacular crown . This thin , non - contractile portion of the endocyst
constitutes the tentacular sheath which encloses and protects the tentacula
during the ...
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 24
I have , however , most distinctly seen them on the inner surface of the upper part
of the tentacular sheath in certain species during the exserted state of the
polypide ( Pl . IV , fig . 4 ) ; on other parts of the endocyst I have not succeeded in
...
I have , however , most distinctly seen them on the inner surface of the upper part
of the tentacular sheath in certain species during the exserted state of the
polypide ( Pl . IV , fig . 4 ) ; on other parts of the endocyst I have not succeeded in
...
Página 26
7 , t ) , longer and stronger than the last , behind which they arise , from the inner
surface of the endocyst in a single plain perpendicular to the axis of the cell , and
thence passing upwards and inwards , are inserted into the sheath in a plane ...
7 , t ) , longer and stronger than the last , behind which they arise , from the inner
surface of the endocyst in a single plain perpendicular to the axis of the cell , and
thence passing upwards and inwards , are inserted into the sheath in a plane ...
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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 alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character 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 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 | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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