A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 18
The mouth and upper part of the æsophagus are in all the genera clothed with
vibratile cilia , but I could detect no appearance of cilia further than a short
distance down this tube . The structure of the intestine closely resembles that ...
The mouth and upper part of the æsophagus are in all the genera clothed with
vibratile cilia , but I could detect no appearance of cilia further than a short
distance down this tube . The structure of the intestine closely resembles that ...
Página 60
marine Polyzoa , and detected the cilia by whose action these currents were
produced ; * he observed similar currents , and the cilia causing them , in some
fresh - water Polyzoa which he found in the Isle of Walcheren . We have seen that
...
marine Polyzoa , and detected the cilia by whose action these currents were
produced ; * he observed similar currents , and the cilia causing them , in some
fresh - water Polyzoa which he found in the Isle of Walcheren . We have seen that
...
Página 71
The ciliated embryos of Alcyonella are also described and figured , but the
authors do not pursue their development into much ... A statement formerly made
by M. Dumortier , that the tentacula of Lophopus crystallinus are deprived of cilia ,
is ...
The ciliated embryos of Alcyonella are also described and figured , but the
authors do not pursue their development into much ... A statement formerly made
by M. Dumortier , that the tentacula of Lophopus crystallinus are deprived of cilia ,
is ...
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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 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