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 38
... annulus is also composed of cells , which here occur in several layers ; these cells are also for the most part larger than those of the disc and of a different colour ; they are filled with air , giving to the annulus a light spongy ...
... annulus is also composed of cells , which here occur in several layers ; these cells are also for the most part larger than those of the disc and of a different colour ; they are filled with air , giving to the annulus a light spongy ...
Página 40
... annulus which overlaps a considerable portion of the disc ( Pl . IV , figs . 7—9 ; VII , figs . 7 , 8 ) . But , besides these bodies , others ( Pl . IV , fig . 10 ; VII , fig . 9 ) may be observed which never lie loose in the cell , but ...
... annulus which overlaps a considerable portion of the disc ( Pl . IV , figs . 7—9 ; VII , figs . 7 , 8 ) . But , besides these bodies , others ( Pl . IV , fig . 10 ; VII , fig . 9 ) may be observed which never lie loose in the cell , but ...
Página 67
... annulus with which they are surrounded , but sets this appearance down as the result of an optical deception , and he incorrectly describes their curious hooked spines as , for the most part , growing from the extreme margin ; while he ...
... annulus with which they are surrounded , but sets this appearance down as the result of an optical deception , and he incorrectly describes their curious hooked spines as , for the most part , growing from the extreme margin ; while he ...
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