A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... portion of the volume has thus been rendered as complete as possible for the practical identification of the species . In fixing the exact limits of the species , some difficulty has been experienced . I have however , deemed it best to ...
... portion of the volume has thus been rendered as complete as possible for the practical identification of the species . In fixing the exact limits of the species , some difficulty has been experienced . I have however , deemed it best to ...
Página 7
... portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as correct an idea - apart from all theoretical considerations of homology or derivation from an archetype ...
... portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as correct an idea - apart from all theoretical considerations of homology or derivation from an archetype ...
Página 8
... portion of the Polyzoa , I have substituted in the following memoir that of Polypide . * To the common dermal system of a colony , which , as well as the solid basis of the true polypes , was formerly known under the names of Polypary ...
... portion of the Polyzoa , I have substituted in the following memoir that of Polypide . * To the common dermal system of a colony , which , as well as the solid basis of the true polypes , was formerly known under the names of Polypary ...
Página 9
... portion of an animal totally deprived of a blood - vascular system , I shall call that region of a Polyzoon on which the nervous ganglion lies the " neural , " and the opposite region , that , namely , which corresponds to the part of ...
... portion of an animal totally deprived of a blood - vascular system , I shall call that region of a Polyzoon on which the nervous ganglion lies the " neural , " and the opposite region , that , namely , which corresponds to the part of ...
Página 10
... portion , and act- ing as an operculum in the retracted state . Polypide completely retractile ; evagination perfect ; orifice of the cell with a moveable lip . PALUDICELLEA ( fresh - water ) . CYCLOSTOMATA ( marine ) . CTENOSTOMATA ...
... portion , and act- ing as an operculum in the retracted state . Polypide completely retractile ; evagination perfect ; orifice of the cell with a moveable lip . PALUDICELLEA ( fresh - water ) . CYCLOSTOMATA ( marine ) . CTENOSTOMATA ...
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