A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 48
A comparison of the tunics of the Tunicata with the cænæcium of the Polyzoa will
render still more obvious the ... exist in the Tunicata three distinct envelopes ,
which , however , may be variously united with one another in the different
genera .
A comparison of the tunics of the Tunicata with the cænæcium of the Polyzoa will
render still more obvious the ... exist in the Tunicata three distinct envelopes ,
which , however , may be variously united with one another in the different
genera .
Página 49
6 , 7 , page 44 ) we shall find that it is continuous with the mantle at the
respiratory and cloacal orifices , and becomes attached to the alimentary canal
just behind the mouth and anus ; it thus holds to the surrounding parts in the
Tunicata ...
6 , 7 , page 44 ) we shall find that it is continuous with the mantle at the
respiratory and cloacal orifices , and becomes attached to the alimentary canal
just behind the mouth and anus ; it thus holds to the surrounding parts in the
Tunicata ...
Página 50
same time situated in the interval between the internal and middle tunic ; it is ,
consequently , within the great “ sinus system " * of the Tunicata , which
corresponds exactly with the perigastric space of the Polyzoa . In the Polyzoa the
two orifices ...
same time situated in the interval between the internal and middle tunic ; it is ,
consequently , within the great “ sinus system " * of the Tunicata , which
corresponds exactly with the perigastric space of the Polyzoa . In the Polyzoa the
two orifices ...
Página 53
It appears to me , then , that the points of connection attempted to be established
in the present memoir between the Polyzoa and the Tunicata are those which
really exist in nature ; but there still remain to be considered some other relations
of ...
It appears to me , then , that the points of connection attempted to be established
in the present memoir between the Polyzoa and the Tunicata are those which
really exist in nature ; but there still remain to be considered some other relations
of ...
Página 54
... homologically repeating the structure of the ordinary zooid , a view against
which no valid objections can be urged . We thus perceive that the affinities of the
Polyzoa pass off in two very evident directions -in one through the Tunicata , and
...
... homologically repeating the structure of the ordinary zooid , a view against
which no valid objections can be urged . We thus perceive that the affinities of the
Polyzoa pass off in two very evident directions -in one through the Tunicata , and
...
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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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