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 37
... funiculus may also be seen attached to the posterior extremity of the body . The tentacula now make their appearance as minute tubercles upon the thickened margin of the lophophore ( fig . 15 ) . The tentacula and arms of the lophophore ...
... funiculus may also be seen attached to the posterior extremity of the body . The tentacula now make their appearance as minute tubercles upon the thickened margin of the lophophore ( fig . 15 ) . The tentacula and arms of the lophophore ...
Página 38
... funiculus , from which they are evidently developed as buds , and may generally be seen in various stages of growth , arranged upon this chord like beads on a necklace , being younger as they approach the distal extremities of the funiculus ...
... funiculus , from which they are evidently developed as buds , and may generally be seen in various stages of growth , arranged upon this chord like beads on a necklace , being younger as they approach the distal extremities of the funiculus ...
Página 39
... funiculus , it falls free into the perigastric space , still surrounded by the delicate external transparent membrane , which is soon torn and disappears . When exposed to conditions favorable for its further development , the two faces ...
... funiculus , it falls free into the perigastric space , still surrounded by the delicate external transparent membrane , which is soon torn and disappears . When exposed to conditions favorable for its further development , the two faces ...
Página 41
... funiculus of the polypide , we are involuntarily reminded of the development of the chains of salpa - buds from the stolon of the solitary salpæ . much more highly differentiated structure , in which the organs 6 ALTERNATION OF ...
... funiculus of the polypide , we are involuntarily reminded of the development of the chains of salpa - buds from the stolon of the solitary salpæ . much more highly differentiated structure , in which the organs 6 ALTERNATION OF ...
Página 42
... funiculus ( in Alcyonella ) , which probably belongs rather to the polypide than to the endocyst , there is developed the mass here described as testis . Now , if we view this mass as a mere organ of the polypide , we must then regard ...
... funiculus ( in Alcyonella ) , which probably belongs rather to the polypide than to the endocyst , there is developed the mass here described as testis . Now , if we view this mass as a mere organ of the polypide , we must then regard ...
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