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
... closely approximated towards the orifices . These cells are filled with a perfectly colourless and transparent fluid . Under the action of acetic acid each is distinctly seen to be bounded by a double outline , and to contain a large ...
... closely approximated towards the orifices . These cells are filled with a perfectly colourless and transparent fluid . Under the action of acetic acid each is distinctly seen to be bounded by a double outline , and to contain a large ...
Página 13
... closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on the stems and leaves of aquatic plants , exposing its beautiful plumes to the light and warmth of the sun ( Pl . I , fig . 2 ) ...
... closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on the stems and leaves of aquatic plants , exposing its beautiful plumes to the light and warmth of the sun ( Pl . I , fig . 2 ) ...
Página 18
... closely resembles that of the oesophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well - fed ...
... closely resembles that of the oesophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well - fed ...
Página 36
... 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 polypide , may ...
... 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 polypide , may ...
Página 59
... closely compacted tubes , each of which opened upon the surface of the mass by a pentagonal or hexagonal orifice , which allowed of the exsertion of a polypoid body in all respects resembling those of Trembley and Rösel . To his newly ...
... closely compacted tubes , each of which opened upon the surface of the mass by a pentagonal or hexagonal orifice , which allowed of the exsertion of a polypoid body in all respects resembling those of Trembley and Rösel . To his newly ...
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
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph