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 36
... tunic has numerous large , round , nucleated cells distributed through its substance , and internally it presents an uneven surface . The two tunics of the gemma are to become the ectocyst and endocyst of the future cell . By this time ...
... tunic has numerous large , round , nucleated cells distributed through its substance , and internally it presents an uneven surface . The two tunics of the gemma are to become the ectocyst and endocyst of the future cell . By this time ...
Página 44
... tunic . b . Middle tunic . c . Internal tunic . d d d . General sinus system . e . Respiratory orifice . f . Cloacal orifice . g . Transverse respiratory bars . h . Longitudinal respiratory bars . i . Branchial sinus . k . Thoracic ...
... tunic . b . Middle tunic . c . Internal tunic . d d d . General sinus system . e . Respiratory orifice . f . Cloacal orifice . g . Transverse respiratory bars . h . Longitudinal respiratory bars . i . Branchial sinus . k . Thoracic ...
Página 49
... tunic in Clavelina ( see figs . 6 , 7 , page 44 ) we shall find that it is continuous with the mantle at the respiratory and cloacal orifices , and becomes attached to the alimentary canal just behind the mouth and anus ; it thus holds ...
... tunic in Clavelina ( see figs . 6 , 7 , page 44 ) we shall find that it is continuous with the mantle at the respiratory and cloacal orifices , and becomes attached to the alimentary canal just behind the mouth and anus ; it thus holds ...
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 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 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