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 10
... Hippocrepia of Gervais . The Hippocrepia of the French zoologist , however , constitute in reality an artificial group . Being essentially characterised by the possession of a crescentic lophophore , they necessarily exclude not only ...
... Hippocrepia of Gervais . The Hippocrepia of the French zoologist , however , constitute in reality an artificial group . Being essentially characterised by the possession of a crescentic lophophore , they necessarily exclude not only ...
Página 20
... hippocrepian character , and give to the crown of tentacula the form presented by the infundibulate genera . The result of this arrangement is , that the anus presents the anomalous condition of opening within the tentacular crater . It ...
... hippocrepian character , and give to the crown of tentacula the form presented by the infundibulate genera . The result of this arrangement is , that the anus presents the anomalous condition of opening within the tentacular crater . It ...
Página 45
... Hippocrepian Polyzoa , it would , perhaps , have been im- possible to arrive at anything like a satisfactory ... Hippo- crepian Polyzoon , a Clavelina , for example , with a Plumatella , a comparison which the accompanying diagrams ...
... Hippocrepian Polyzoa , it would , perhaps , have been im- possible to arrive at anything like a satisfactory ... Hippo- crepian Polyzoon , a Clavelina , for example , with a Plumatella , a comparison which the accompanying diagrams ...
Página 46
... Hippocrepian Polyzoa . This correspondence will be rendered more obvious by imagining the branchial sinus to be depressed towards the neural side of the Ascidian , by a rotation round its oral extremity through an angle of 90 ° in a ...
... Hippocrepian Polyzoa . This correspondence will be rendered more obvious by imagining the branchial sinus to be depressed towards the neural side of the Ascidian , by a rotation round its oral extremity through an angle of 90 ° in a ...
Página 48
... hippocrepian Polyzoa may be in directly indicating the relations here dwelt on , the infundibulate genera present no difficulty , for the orbicular lophophore , after all , is but an unimportant modification of the crescentic , and is ...
... hippocrepian Polyzoa may be in directly indicating the relations here dwelt on , the infundibulate genera present no difficulty , for the orbicular lophophore , after all , is but an unimportant modification of the crescentic , and is ...
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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