A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 19
The lophophore is throughout almost the entire class of an orbicular figure ; but in
the fresh - water genera Cristatella ... so as to cause the lophophore in these
genera to present the form of a deep crescent , round whose entire margin the ...
The lophophore is throughout almost the entire class of an orbicular figure ; but in
the fresh - water genera Cristatella ... so as to cause the lophophore in these
genera to present the form of a deep crescent , round whose entire margin the ...
Página 48
However interesting the hippocrepian Polyzoa may be in directly indicating the
relations here dwelt on , the infundibulate genera present no difficulty , for the
orbicular lophophore , after all , is but an unimportant modification of the
crescentic ...
However interesting the hippocrepian Polyzoa may be in directly indicating the
relations here dwelt on , the infundibulate genera present no difficulty , for the
orbicular lophophore , after all , is but an unimportant modification of the
crescentic ...
Página 76
CONDENSED SYNOPSIS OF THE ORDERS , SUB - ORDERS , FAMILIES , AND
GENERA . The fresh - water Polyzoa admit of being divided into eight generic
groups . The discrimination of these is very easy in the living animal ; but as some
...
CONDENSED SYNOPSIS OF THE ORDERS , SUB - ORDERS , FAMILIES , AND
GENERA . The fresh - water Polyzoa admit of being divided into eight generic
groups . The discrimination of these is very easy in the living animal ; but as some
...
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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 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