A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-3 de 23
Página 7
... retracted or protruded according to the will of the animal , the retraction being accompanied by an invagination of the sac so as partially or entirely to include the oral tentacula within it ; and if to these characters we add the ...
... retracted or protruded according to the will of the animal , the retraction being accompanied by an invagination of the sac so as partially or entirely to include the oral tentacula within it ; and if to these characters we add the ...
Página 28
... retraction of the polypide . ( 5. ) Parietal Muscles . These are numerous , short but strong , and very evident fibres ( Pl . X , figs . 3 , 4 , v ) , which run transversely in the endocyst in small groups of two or three fibres each ...
... retraction of the polypide . ( 5. ) Parietal Muscles . These are numerous , short but strong , and very evident fibres ( Pl . X , figs . 3 , 4 , v ) , which run transversely in the endocyst in small groups of two or three fibres each ...
Página 49
... retracted state of the animal ; it scarcely differs , in fact , from the tentacular sheath of the Polyzoa in anything ... retraction of the polypide in the Polyzoa are of course absent in the Tunicata . In the middle tunic of the Ascidia ...
... retracted state of the animal ; it scarcely differs , in fact , from the tentacular sheath of the Polyzoa in anything ... retraction of the polypide in the Polyzoa are of course absent in the Tunicata . In the middle tunic of the Ascidia ...
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