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 5
... first to call attention to the close connection of their structure with that of the Ascidia , and the important bearing of this connection on their systematic rank . * Cuvier had already determined a striking difference of structure ...
... first to call attention to the close connection of their structure with that of the Ascidia , and the important bearing of this connection on their systematic rank . * Cuvier had already determined a striking difference of structure ...
Página 34
... first but slightly developed , and there is as yet no trace of tentacula ( Pl . XI , fig . 30 " ) ; these soon present themselves in the form of minute tubercles , at first confined to the body of the lophophore ( Pl . XI , fig . 30 ...
... first but slightly developed , and there is as yet no trace of tentacula ( Pl . XI , fig . 30 " ) ; these soon present themselves in the form of minute tubercles , at first confined to the body of the lophophore ( Pl . XI , fig . 30 ...
Página 52
... first indication of the alimentary canal as a tube of uniform diameter bent into a loop . The walls of this cavity are at first in close apposition with those of the thoracic chamber , which completely encloses it , so that the two ...
... first indication of the alimentary canal as a tube of uniform diameter bent into a loop . The walls of this cavity are at first in close apposition with those of the thoracic chamber , which completely encloses it , so that the two ...
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