A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 12
... transverse and longitudinal fibres over the whole extent of the endocyst . I have even succeeded in separating this network as a continuous layer . There can be no doubt that these fibres of the endocyst are muscular , and that it is to ...
... transverse and longitudinal fibres over the whole extent of the endocyst . I have even succeeded in separating this network as a continuous layer . There can be no doubt that these fibres of the endocyst are muscular , and that it is to ...
Página 14
... transverse septa exist between the cells . They are formed both by the ectocyst and endocyst . In Paludicella they ... transversely from the ectocyst into the interior of the cell , with a covering of endocyst on its upper and under ...
... transverse septa exist between the cells . They are formed both by the ectocyst and endocyst . In Paludicella they ... transversely from the ectocyst into the interior of the cell , with a covering of endocyst on its upper and under ...
Página 26
... transversely inwards , and are inserted into the opposed surface of the invaginated endocyst . Their action will dilate the invaginated endocyst , and assist in keeping it permanently inverted . ( 6. ) Posterior Parieto - vaginal ...
... transversely inwards , and are inserted into the opposed surface of the invaginated endocyst . Their action will dilate the invaginated endocyst , and assist in keeping it permanently inverted . ( 6. ) Posterior Parieto - vaginal ...
Página 27
... transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen very distinctly towards the anterior extremity of the cell , but it is not always easy to determine how far ...
... transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen very distinctly towards the anterior extremity of the cell , but it is not always easy to determine how far ...
Página 28
... transversely round the invaginated tunic . I have not succeeded in dividing it into an inferior and superior set , as described by Mr. Hancock . Its action closes the invaginated endocyst after the retraction of the polypide . ( 5 ...
... transversely round the invaginated tunic . I have not succeeded in dividing it into an inferior and superior set , as described by Mr. Hancock . Its action closes the invaginated endocyst after the retraction of the polypide . ( 5 ...
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