A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 20
Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h . Rectum . i .
Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h . Rectum . i .
Página 21
In order to understand this relation , it is necessary to conceive of the polypide as partially retracted ; the invaginated portion of the endocyst must then be viewed as adherent to the external portion externally , and to the ...
In order to understand this relation , it is necessary to conceive of the polypide as partially retracted ; the invaginated portion of the endocyst must then be viewed as adherent to the external portion externally , and to the ...
Página 22
This cup is adherent to the back of the tentacula , and its margin is in most instances prolonged more or less upon each tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ...
This cup is adherent to the back of the tentacula , and its margin is in most instances prolonged more or less upon each tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ...
Página 32
3 , 4 , 4 ) , adherent to the inner surface of the endocyst towards the anterior part of the cell . About the end of June , when I discovered this organ , it was loaded with ova of various sizes , some so small as to require for their ...
3 , 4 , 4 ) , adherent to the inner surface of the endocyst towards the anterior part of the cell . About the end of June , when I discovered this organ , it was loaded with ova of various sizes , some so small as to require for their ...
Página 36
This sac is closely adherent to the polypide behind the lophophore , but upon the lophophore and tentacula it has become free , and here constitutes the tentacular sheath . Some delicate fibres , the rudiments of the retractor of the ...
This sac is closely adherent to the polypide behind the lophophore , but upon the lophophore and tentacula it has become free , and here constitutes the tentacular sheath . Some delicate fibres , the rudiments of the retractor of the ...
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Otras ediciones - Ver todas
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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella 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 Hancock 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 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