A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 19
... margin of the lophophore . The lophophore is throughout almost the entire class of an orbicular figure ; but in the fresh - water genera Cristatella , Lophopus , Plumatella , and Alcyonella , its neural margin , or that which ...
... margin of the lophophore . The lophophore is throughout almost the entire class of an orbicular figure ; but in the fresh - water genera Cristatella , Lophopus , Plumatella , and Alcyonella , its neural margin , or that which ...
Página 37
... margin ; as yet , there is no trace of tentacula . The retractor muscles show themselves as two fasciculi passing off from the base of the lophophore , and the funiculus may also be seen attached to the posterior extremity of the body ...
... margin ; as yet , there is no trace of tentacula . The retractor muscles show themselves as two fasciculi passing off from the base of the lophophore , and the funiculus may also be seen attached to the posterior extremity of the body ...
Página 82
... margin , from 50 to 80 sigmoid tentacula arranged at the summit in the double outline of U , with the extremities of the arms of the latter inclining towards each other ; lip elevated , with the base of the tentacular lobes and the ...
... margin , from 50 to 80 sigmoid tentacula arranged at the summit in the double outline of U , with the extremities of the arms of the latter inclining towards each other ; lip elevated , with the base of the tentacular lobes and the ...
Otras ediciones - Ver todas
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 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