A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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The zoographical portion of the volume has thus been rendered as complete as
possible for the practical identification of the species . In fixing the exact limits of
the species , some difficulty has been experienced . I have however , deemed it ...
The zoographical portion of the volume has thus been rendered as complete as
possible for the practical identification of the species . In fixing the exact limits of
the species , some difficulty has been experienced . I have however , deemed it ...
Página 7
... and if to these characters we add the presence of true sexual organs in the
form of ovary and testis occupying some portion of the interior of the sac , and the
negative character of the absence of all vestige of a heart , we shall have
perhaps ...
... and if to these characters we add the presence of true sexual organs in the
form of ovary and testis occupying some portion of the interior of the sac , and the
negative character of the absence of all vestige of a heart , we shall have
perhaps ...
Página 8
... originally applied not only to the polypoid Radiata , to which its use ought to be
confined , but also to the retractile portion of the Polyzoa , I have substituted in the
following memoir that of Polypide . * To the common dermal system of a colony ...
... originally applied not only to the polypoid Radiata , to which its use ought to be
confined , but also to the retractile portion of the Polyzoa , I have substituted in the
following memoir that of Polypide . * To the common dermal system of a colony ...
Página 9
I shall , therefore , willingly adopt them in the present Memoir , and
notwithstanding an apparent contradiction in designating as “ hæmal ” any
portion of an animal totally deprived of a blood - vascular system , I shall call that
region of a ...
I shall , therefore , willingly adopt them in the present Memoir , and
notwithstanding an apparent contradiction in designating as “ hæmal ” any
portion of an animal totally deprived of a blood - vascular system , I shall call that
region of a ...
Página 10
T Polypide completely retractile ; evagination perfect ; a circle of setæ attached to
the ininvertible portion , and acting as an operculum in the retracted state .
CTENOSTOMATA ( marine ) . Polypide completely retractile ; evagination perfect
...
T Polypide completely retractile ; evagination perfect ; a circle of setæ attached to
the ininvertible portion , and acting as an operculum in the retracted state .
CTENOSTOMATA ( marine ) . Polypide completely retractile ; evagination perfect
...
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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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