A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 16
... cavity of the stomach . The second division ( g ) forms the greater portion of the stomach ; it is also of a nearly cylindrical form ; but it is longer and wider than the cardiac cavity with which its axis is nearly continuous ; it ...
... cavity of the stomach . The second division ( g ) forms the greater portion of the stomach ; it is also of a nearly cylindrical form ; but it is longer and wider than the cardiac cavity with which its axis is nearly continuous ; it ...
Página 17
... cavity and œsophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the ... cavity of the stomach in the other fresh - water Polyzoa , and to the gizzard in certain marine species . This sac is ...
... cavity and œsophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the ... cavity of the stomach in the other fresh - water Polyzoa , and to the gizzard in certain marine species . This sac is ...
Página 36
... cavity begins to be cut off from that of the parent - cell by the formation of a septum . We next perceive that a portion of the lining tunic , near the wide extremity of the gemma , projects in the form of a roundish mass into the ...
... cavity begins to be cut off from that of the parent - cell by the formation of a septum . We next perceive that a portion of the lining tunic , near the wide extremity of the gemma , projects in the form of a roundish mass into the ...
Otras ediciones - Ver todas
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 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