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 16
... continuous on the neural side , with a hollow valve - like organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its ...
... continuous on the neural side , with a hollow valve - like organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its ...
Página 35
... continuous , while the cilia themselves disappear from the ciliated portion , and the entire sac becomes enveloped ... continuous with the ectocyst of the parent - cell , and of a thick , fleshy lining , continuous with the endocyst ...
... continuous , while the cilia themselves disappear from the ciliated portion , and the entire sac becomes enveloped ... continuous with the ectocyst of the parent - cell , and of a thick , fleshy lining , continuous with the endocyst ...
Página 56
... continuous stream flowing towards their extremities . When it arrives there , it takes a retrograde course , flowing back again through the same channel into the cavity of the disc . We now find that the returning blood has entered ...
... continuous stream flowing towards their extremities . When it arrives there , it takes a retrograde course , flowing back again through the same channel into the cavity of the disc . We now find that the returning blood has entered ...
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