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 35
... gemmæ , to be presently described , these bodies always originate in the endocyst . In Lophopus , Alcyonella , Plumatella , and Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ ...
... gemmæ , to be presently described , these bodies always originate in the endocyst . In Lophopus , Alcyonella , Plumatella , and Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ ...
Página 36
... gemma are to become the ectocyst and endocyst of the future cell . By this time the gemma has become considerably elongated and has acquired a clavate form , and its cavity begins to be cut off from that of the parent - cell by the ...
... gemma are to become the ectocyst and endocyst of the future cell . By this time the gemma has become considerably elongated and has acquired a clavate form , and its cavity begins to be cut off from that of the parent - cell by the ...
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Including All the Known Species, Both British and Foreign. 4 PLATE XI . DEVELOPMENT OF GEMMA AND OVUM . Fig.
Including All the Known Species, Both British and Foreign. 4 PLATE XI . DEVELOPMENT OF GEMMA AND OVUM . Fig.
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