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 tentacula are tubular , closed at their free extremity , and opening by the
opposite through the lophophore into the perigastric space ; in all the Polyzoa
they are armed upon their opposed sides with vibratile cilia , arranged in a single
...
The tentacula are tubular , closed at their free extremity , and opening by the
opposite through the lophophore into the perigastric space ; in all the Polyzoa
they are armed upon their opposed sides with vibratile cilia , arranged in a single
...
Página 46
... by a rotation round its oral extremity through an angle of 90 ° in a vertical plane
passing through the mouth and anus ; its position from longitudinal will thus be
changed to transverse , while the transverse bars will become longitudinal , and ...
... by a rotation round its oral extremity through an angle of 90 ° in a vertical plane
passing through the mouth and anus ; its position from longitudinal will thus be
changed to transverse , while the transverse bars will become longitudinal , and ...
Página 89
They are fond of attaching themselves to the branches of trees which dip into the
water , and then constantly exhibit lobed , pear - shaped masses pendant from
the extremities of the sprays . When a living specimen is examined in the water ...
They are fond of attaching themselves to the branches of trees which dip into the
water , and then constantly exhibit lobed , pear - shaped masses pendant from
the extremities of the sprays . When a living specimen is examined in the water ...
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Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous 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 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 Illinois en Urbana-Champaign |
| Digitalizado | 13 Oct. 2015 |
| Largo | 119 páginas |
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