A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... representing some of the more important features in the structure of this remarkable Polyzoon . All the figures upon the eleven lithographic plates which accompany this volume have been drawn from Nature , and contain careful ...
... representing some of the more important features in the structure of this remarkable Polyzoon . All the figures upon the eleven lithographic plates which accompany this volume have been drawn from Nature , and contain careful ...
Página 14
... represents it in his figure , * while M. Van Beneden believes it to be an acci- dental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent ...
... represents it in his figure , * while M. Van Beneden believes it to be an acci- dental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent ...
Página 22
... represented . ** The perigastric space , and interior of the tentacula and 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 ...
... represented . ** The perigastric space , and interior of the tentacula and 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 ...
Página 34
... representing the chorization process in the development of the embryo of Alcyonella . The stage represented in 3 has not been actually seen , but seems to be the only one that will supply the missing link . Towards the opening which ...
... representing the chorization process in the development of the embryo of Alcyonella . The stage represented in 3 has not been actually seen , but seems to be the only one that will supply the missing link . Towards the opening which ...
Página 43
... represented in the Polyzoa . Now , the opinions entertained on this subject may be classed under two distinct heads . Under the one head it is maintained that the respiratory sac of the Ascidian has its repre- sentative in the pharynx ...
... represented in the Polyzoa . Now , the opinions entertained on this subject may be classed under two distinct heads . Under the one head it is maintained that the respiratory sac of the Ascidian has its repre- sentative in the pharynx ...
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