A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Resultados 6-10 de 43
Página 14
... polypide . These ribs I look upon as the true homologue of the seta which crown the cell in Bowerbankia and other ctenostomatous Polyzoa ; if these setæ were reduced in number to four , and instead of being free were attached along ...
... polypide . These ribs I look upon as the true homologue of the seta which crown the cell in Bowerbankia and other ctenostomatous Polyzoa ; if these setæ were reduced in number to four , and instead of being free were attached along ...
Página 16
... polypide is exserted from its cell , to be in a constant motion , which consists in an alternate elevation and depression of the organ . The elevation is effected by distinct muscular fibres ( n ) , which are visible through the ...
... polypide is exserted from its cell , to be in a constant motion , which consists in an alternate elevation and depression of the organ . The elevation is effected by distinct muscular fibres ( n ) , which are visible through the ...
Página 17
... polypide it is bent back upon the rest of the stomach . The great cavity ( g ) of the stomach is of a nearly cylindrical figure ; from its upper extremity arises the intestine ( ) . This tube presents , just after its origin , a wide ...
... polypide it is bent back upon the rest of the stomach . The great cavity ( g ) of the stomach is of a nearly cylindrical figure ; from its upper extremity arises the intestine ( ) . This tube presents , just after its origin , a wide ...
Página 18
... polypide of Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and ...
... polypide of Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and ...
Página 21
... polypide must be very limited . When the polypide desires to withdraw under cover of the cell , the free portion of each tentacle is rolled inwards as far as the margin of the calyx - like cup , and then the mouth of the cup is closed ...
... polypide must be very limited . When the polypide desires to withdraw under cover of the cell , the free portion of each tentacle is rolled inwards as far as the margin of the calyx - like cup , and then the mouth of the cup is closed ...
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