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 5
... Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . Zoological Researches and Illustrations . ' By John V. Thompson . Cork , 1830. The date is not ...
... Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . Zoological Researches and Illustrations . ' By John V. Thompson . Cork , 1830. The date is not ...
Página 6
... ascidian type of structure had now been recognised in the Polyzoa , naturalists had not yet emancipated themselves ... Ascidians by Edwards and Thompson . 7. The designation , by a common independent name , of these animals by Thompson ...
... ascidian type of structure had now been recognised in the Polyzoa , naturalists had not yet emancipated themselves ... Ascidians by Edwards and Thompson . 7. The designation , by a common independent name , of these animals by Thompson ...
Página 9
... Ascidian which contains the heart , the " hæmal . " Tabular view of the Orders and Sub - orders of Polyzoa . The reader will be further assisted in the anatomical inquiry in which we are now about to be engaged , by having placed before ...
... Ascidian which contains the heart , the " hæmal . " Tabular view of the Orders and Sub - orders of Polyzoa . The reader will be further assisted in the anatomical inquiry in which we are now about to be engaged , by having placed before ...
Página 43
... Ascidian has its repre- sentative in the pharynx of the Polyzoon , and that the rudimentary tentacula at the orifice of this sac are homologous with the tentacula of the Polyzoon . Under the other head it is asserted that the ...
... Ascidian has its repre- sentative in the pharynx of the Polyzoon , and that the rudimentary tentacula at the orifice of this sac are homologous with the tentacula of the Polyzoon . Under the other head it is asserted that the ...
Página 44
... Ascidian must be considered as becoming extinct in the tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another place endeavoured to show that while the respiratory sac of the Ascidian has undoubtedly ...
... Ascidian must be considered as becoming extinct in the tentacular crown of the Polyzoon . Now this view is certainly untenable . I have in another place endeavoured to show that while the respiratory sac of the Ascidian has undoubtedly ...
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 crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi 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 longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus 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