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 20
... Endocyst . c . Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h ...
... Endocyst . c . Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h ...
Página 21
... endocyst must then be viewed as adherent to the external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very limited ...
... endocyst must then be viewed as adherent to the external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very limited ...
Página 23
... endocyst , which may afford the necessary channels of communication , or it may be that it is in simple transudation through the walls of the alimentary canal that we are to seek for the true mode in which the external water passes into ...
... endocyst , which may afford the necessary channels of communication , or it may be that it is in simple transudation through the walls of the alimentary canal that we are to seek for the true mode in which the external water passes into ...
Página 24
... endocyst , there can , however , now be no doubt . Van Beneden * tells us that he has seen these cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm ...
... endocyst , there can , however , now be no doubt . Van Beneden * tells us that he has seen these cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm ...
Página 26
... endocyst , commencing close to the line of invagi- nation , and extending for some distance backwards . From this origin they pass transversely inwards , and are inserted into the opposed surface of the invaginated endocyst . Their ...
... endocyst , commencing close to the line of invagi- nation , and extending for some distance backwards . From this origin they pass transversely inwards , and are inserted into the opposed surface of the invaginated endocyst . Their ...
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 cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst 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 lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus 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 Zoophytes