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
... transparent , and contractile ; and an external , the ectocyst , which varies greatly in character in the different genera . The endocyst ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX , fig . 7 ; X , fig . 4 , a ) lines the interior of ...
... transparent , and contractile ; and an external , the ectocyst , which varies greatly in character in the different genera . The endocyst ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX , fig . 7 ; X , fig . 4 , a ) lines the interior of ...
Página 12
... transparent ectocyst admits of a distinct view of all the contained parts , the fibres are collected into numerous transverse bands ( Pl . X , figs . 3 , 4 , v ) , which we may trace throughout the whole extent of the cell . 2500 A ...
... transparent ectocyst admits of a distinct view of all the contained parts , the fibres are collected into numerous transverse bands ( Pl . X , figs . 3 , 4 , v ) , which we may trace throughout the whole extent of the cell . 2500 A ...
Página 13
... transparent wide origin of this line gives to the orifice of the cell the appearance of having a deep notch on one side . In Frede- ricella a slightly prominent keel is also apparent , but the notch - like transparent space does not ...
... transparent wide origin of this line gives to the orifice of the cell the appearance of having a deep notch on one side . In Frede- ricella a slightly prominent keel is also apparent , but the notch - like transparent space does not ...
Página 14
... transparent and colourless fluid , probably in the meshes of a sort of areolar tissue . I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has ...
... transparent and colourless fluid , probably in the meshes of a sort of areolar tissue . I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has ...
Página 16
... transparent , and destitute of cilia . It may be observed , when 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 ...
... transparent , and destitute of cilia . It may be observed , when 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 ...
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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 character cilia cœnćcium 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 hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus 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 ŕ Panache polypide Polyzoon portion 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