A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 12
Near the spot where the endocyst passes into the tentacular sheath , there
appears to exist , at least in Lophopus , a circular canal , which here passes
transversely round the endocyst . The presence of this canal is revealed by
peculiar ...
Near the spot where the endocyst passes into the tentacular sheath , there
appears to exist , at least in Lophopus , a circular canal , which here passes
transversely round the endocyst . The presence of this canal is revealed by
peculiar ...
Página 26
From this origin they pass transversely inwards , and are inserted into the
opposed surface of the invaginated ... 6 , u ) surrounding the termination of the
invaginated endocyst at the point where the latter passes into the tentacular
sheath .
From this origin they pass transversely inwards , and are inserted into the
opposed surface of the invaginated ... 6 , u ) surrounding the termination of the
invaginated endocyst at the point where the latter passes into the tentacular
sheath .
Página 56
On the rectal side of the animal may be seen passing from behind forwards , and
in close relation with the intestine , a very ... From this the blood passes into all
the tentacles , and may be seen as a continuous stream flowing towards their ...
On the rectal side of the animal may be seen passing from behind forwards , and
in close relation with the intestine , a very ... From this the blood passes into all
the tentacles , and may be seen as a continuous stream flowing towards their ...
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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 character cilia closely complete condition connected consists constitutes contained continuous 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 Hist 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