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 11
... passes outwards and inwards , as has already been defined , is the orifice of the cell . It must not , however , be supposed that there is here any proper orifice , the retraction and exsertion consisting merely in an invagination and ...
... passes outwards and inwards , as has already been defined , is the orifice of the cell . It must not , however , be supposed that there is here any proper orifice , the retraction and exsertion consisting merely in an invagination and ...
Página 12
... 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 , spherical or oval ...
... 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 , spherical or oval ...
Página 13
... passes backwards , when it soon assumes the appearance of a prominent keel , and then loses its transparency by the deposition of earthy matter , as in the rest of the ectocyst ( Pl . VIII , figs . 2 , 3 ) . The perfectly transparent ...
... passes backwards , when it soon assumes the appearance of a prominent keel , and then loses its transparency by the deposition of earthy matter , as in the rest of the ectocyst ( Pl . VIII , figs . 2 , 3 ) . The perfectly transparent ...
Página 17
... passes up along the side of the cardiac cavity and oesophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the tentacular sheath just below the mouth , and at the concave side of the lophophore ...
... passes up along the side of the cardiac cavity and oesophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the tentacular sheath just below the mouth , and at the concave side of the lophophore ...
Página 20
... passes uninterruptedly from the extremity of one arm of the lophophore to that of the other , thus binding together the two tentacula which spring from the points of the arms , and completing the tentacular crater so as entirely to ...
... passes uninterruptedly from the extremity of one arm of the lophophore to that of the other , thus binding together the two tentacula which spring from the points of the arms , and completing the tentacular crater so as entirely to ...
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
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |