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 46
... genus is not , as we might be led to expect from the comparison we have made between these organs and the epistome of Plumatella , the languet nearest to the mouth , but on the contrary ( if we may judge from its position ) , the one ...
... genus is not , as we might be led to expect from the comparison we have made between these organs and the epistome of Plumatella , the languet nearest to the mouth , but on the contrary ( if we may judge from its position ) , the one ...
Página 47
... genus , moreover , the hæmal extremities of the transverse bars of one side are separated from the corresponding extremities of those of the other by a considerable space , and thus present a marked approach to the open condition which ...
... genus , moreover , the hæmal extremities of the transverse bars of one side are separated from the corresponding extremities of those of the other by a considerable space , and thus present a marked approach to the open condition which ...
Página 48
... genus . Lagenella , the epistome has disappeared , but the lophophore still retains a slight bilaterality . Finally , in the fresh - water genus Paludicella , and most of the marine genera , not only has the epistome disappeared , but ...
... genus . Lagenella , the epistome has disappeared , but the lophophore still retains a slight bilaterality . Finally , in the fresh - water genus Paludicella , and most of the marine genera , not only has the epistome disappeared , but ...
Página 50
... genus Appendicularia affords the most im- portant exception . The singular little animals constituting this genus , which I agree with Huxley and Gegenbauer§ in viewing as an independent form rather than as the larval state of an ...
... genus Appendicularia affords the most im- portant exception . The singular little animals constituting this genus , which I agree with Huxley and Gegenbauer§ in viewing as an independent form rather than as the larval state of an ...
Página 59
... genus , under the name of Cristatella . Linnæus's grand invention of a binary nomenclature had now been established , and we accordingly find in the tenth edition of the Systema Naturæ , ' published in 1758 , the fresh- water Polyzoa ...
... genus , under the name of Cristatella . Linnæus's grand invention of a binary nomenclature had now been established , and we accordingly find in the tenth edition of the Systema Naturæ , ' published in 1758 , the fresh- water Polyzoa ...
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