A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 10
... necessarily exclude not only Pedicellina , but even Fredericella , whose
relations with the species furnished with a crescentic lophophore are of the most
intimate kind . Hippocrepianism , therefore , though of great interest as a
morphological ...
... necessarily exclude not only Pedicellina , but even Fredericella , whose
relations with the species furnished with a crescentic lophophore are of the most
intimate kind . Hippocrepianism , therefore , though of great interest as a
morphological ...
Página 13
In Fredericella a slightly prominent keel is also apparent , but the notch - like
transparent space does not here exist . In Cristatella ( Pl . I ) the ectucyst would
seem to be entirely absent ; and this genus , therefore , presents the anomalous ...
In Fredericella a slightly prominent keel is also apparent , but the notch - like
transparent space does not here exist . In Cristatella ( Pl . I ) the ectucyst would
seem to be entirely absent ; and this genus , therefore , presents the anomalous ...
Página 15
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristalella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristalella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
Página 19
In Fredericella the arms of the crescent are obsolete , and the lophophore here
may , on a superficial view , appear orbicular ; but a careful examination will
render manifest its departure from the orbicular form , the side corresponding to
the ...
In Fredericella the arms of the crescent are obsolete , and the lophophore here
may , on a superficial view , appear orbicular ; but a careful examination will
render manifest its departure from the orbicular form , the side corresponding to
the ...
Página 22
... marked in Fredericella ; in some species of Plumatella it is scarcely perceptible
. A high power of the microscope , and carefully adjusted illumination , will enable
us to detect in the calyciform membrane certain delicate anastomosing lines .
... marked in Fredericella ; in some species of Plumatella it is scarcely perceptible
. A high power of the microscope , and carefully adjusted illumination , will enable
us to detect in the calyciform membrane certain delicate anastomosing lines .
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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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