A Monograph of the Freshwater Polyzoa, Including All the Known Species, Both British and Foreign |
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Página 3
It consisted of a lobed jelly-like mass, from which protruded numerous polypoid
bodies, each characterised by the possession of an elegant crown of tentacula
borne on the margin of a crescent-shaped disc. This beautiful tentacular plume is
...
It consisted of a lobed jelly-like mass, from which protruded numerous polypoid
bodies, each characterised by the possession of an elegant crown of tentacula
borne on the margin of a crescent-shaped disc. This beautiful tentacular plume is
...
Página 8
The sort of disc or stage which surrounds the mouth and bears the tentacula, I
have called Lophophore. The Epistome" is a peculiar valve-like organ which
arches over the mouth in most of the fresh-water genera. The Periyastric" space
is the ...
The sort of disc or stage which surrounds the mouth and bears the tentacula, I
have called Lophophore. The Epistome" is a peculiar valve-like organ which
arches over the mouth in most of the fresh-water genera. The Periyastric" space
is the ...
Página 13
In Cristatella, where the endocyst constitutes the whole of the coenoecium, it
presents below a flattened disc, which closely resembles the foot of a
gasteropodous mollusc, and on which this singular colony creeps about on the
stems and ...
In Cristatella, where the endocyst constitutes the whole of the coenoecium, it
presents below a flattened disc, which closely resembles the foot of a
gasteropodous mollusc, and on which this singular colony creeps about on the
stems and ...
Página 19
The tentacular crown of a Polyzoon consists of two portions, namely, first, a sort of
stage or disc (the lophophore) (Pl. II, fig. 24; IX, fig. 7; X, figs. 3, 4, Å) which
surrounds the mouth ; and secondly, a series of tentacula () which are borne
upon the ...
The tentacular crown of a Polyzoon consists of two portions, namely, first, a sort of
stage or disc (the lophophore) (Pl. II, fig. 24; IX, fig. 7; X, figs. 3, 4, Å) which
surrounds the mouth ; and secondly, a series of tentacula () which are borne
upon the ...
Página 26
... muscularity; but they do not always present the appearance of distinct fibrous
fascicles, and I have been unable to detect in them the striae, or see them
breaking into the discs, which may be observed in the great retractors of the
polypide.
... muscularity; but they do not always present the appearance of distinct fibrous
fascicles, and I have been unable to detect in them the striae, or see them
breaking into the discs, which may be observed in the great retractors of the
polypide.
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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 alimentary canal Allman already anatomy animal appearance attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely coenoecium 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 organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor 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 Freshwater Polyzoa, Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Exportar cita | BiBTeX EndNote RefMan |