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 22
... lophophore , all freely communicate with one another , and are filled with a clear fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be observed a constant rotatory motion , rendered ...
... lophophore , all freely communicate with one another , and are filled with a clear fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be observed a constant rotatory motion , rendered ...
Página 25
... lophophore . Action : they rotate the tentacular crown , and depress the lobes . ( 3. ) Tentacular Muscles ? Under this name may perhaps be described a set of delicate parallel bands ( Pl . V , fig . 5 , q ) . to which attention was ...
... lophophore . Action : they rotate the tentacular crown , and depress the lobes . ( 3. ) Tentacular Muscles ? Under this name may perhaps be described a set of delicate parallel bands ( Pl . V , fig . 5 , q ) . to which attention was ...
Página 27
... lophophores . The muscles may here be divided into five sets : ( 1. ) Retractor Muscle of the Polypide . This ( Pl . X , figs . 3 , 4 , n ) resembles in attachments and use the corresponding muscle in the other species , but is not so ...
... lophophores . The muscles may here be divided into five sets : ( 1. ) Retractor Muscle of the Polypide . This ( Pl . X , figs . 3 , 4 , n ) resembles in attachments and use the corresponding muscle in the other species , but is not so ...
Página 29
... lophophore and tentacula a very short distance , and can exercise no exsertile influence on the inferior portion of the polypide , which , indeed , it must rather tend to repel into the bottom of the cell ; while in all the fresh ...
... lophophore and tentacula a very short distance , and can exercise no exsertile influence on the inferior portion of the polypide , which , indeed , it must rather tend to repel into the bottom of the cell ; while in all the fresh ...
Página 31
... lophophore , and then , after giving off a branch which runs along the root of the lophophore towards the hæmal side , and which sends in its passage a filament to each tentacle on this side of the lophophore , it continues its course ...
... lophophore , and then , after giving off a branch which runs along the root of the lophophore towards the hæmal side , and which sends in its passage a filament to each tentacle on this side of the lophophore , it continues its course ...
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