A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 9
... which all the species of Polyzoa , both marine and fresh - water , admit of being
arranged : * ' English Cyclopædia , ' 1855 , article “ Mollusca ; ” and “ Phil . Trans .
, ' 1853 . ORDERS . SUB - ORDERS . Arms of lophophore free 2 ASPECTS .
... which all the species of Polyzoa , both marine and fresh - water , admit of being
arranged : * ' English Cyclopædia , ' 1855 , article “ Mollusca ; ” and “ Phil . Trans .
, ' 1853 . ORDERS . SUB - ORDERS . Arms of lophophore free 2 ASPECTS .
Página 17
... 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 concave side of the
lophophore . 6.
... 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 concave side of the
lophophore . 6.
Página 25
5,9 ) . to which attention was first directed by Van Beneden , and which may be
observed running from below upwards upon the margin of the lophophore ; these
bands are continuous with one another below , and when they arrive at the ...
5,9 ) . to which attention was first directed by Van Beneden , and which may be
observed running from below upwards upon the margin of the lophophore ; these
bands are continuous with one another below , and when they arrive at the ...
Página 29
which Dr. A. Farre * attributes so large a share in the production of this act among
the marine Polyzoa , can at most raise the lophophore and tentacula a very short
distance , and can exercise no exsertile influence on the inferior portion of the ...
which Dr. A. Farre * attributes so large a share in the production of this act among
the marine Polyzoa , can at most raise the lophophore and tentacula a very short
distance , and can exercise no exsertile influence on the inferior portion of the ...
Página 34
The arms of the lophophore in the young polypides are at first but slightly
developed , and there is as yet no trace of tentacula ( Pl . XI , fig . 30 " ) ; these
soon present themselves in the form of minute tubercles , at first confined to the
body of the ...
The arms of the lophophore in the young polypides are at first but slightly
developed , and there is as yet no trace of tentacula ( Pl . XI , fig . 30 " ) ; these
soon present themselves in the form of minute tubercles , at first confined to the
body of the ...
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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 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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