A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 43
One of these , the Molluscoida , included the Polyzoa and Tunicata ; the other ,
the Mollusca proper , embraced all the other members of the molluscan sub -
kingdom . The affinities of the Tunicata and Polyzoa being thus fully recognised ,
it is ...
One of these , the Molluscoida , included the Polyzoa and Tunicata ; the other ,
the Mollusca proper , embraced all the other members of the molluscan sub -
kingdom . The affinities of the Tunicata and Polyzoa being thus fully recognised ,
it is ...
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 ; il 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 ; il 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 ...
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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 canal cavity cell characters 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 stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young