A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 22
... tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the ... tentacles in Pedicellina , the only marine genus in which an epistome is also represented . * The perigastric space ...
... tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the ... tentacles in Pedicellina , the only marine genus in which an epistome is also represented . * The perigastric space ...
Página 51
... tentacles ; and the result will be a Polyzoon , which needs only the power of gemmation to give rise to those composite aggregations which are so characteristic of the group . " + In these words we have an excellent and easily ...
... tentacles ; and the result will be a Polyzoon , which needs only the power of gemmation to give rise to those composite aggregations which are so characteristic of the group . " + In these words we have an excellent and easily ...
Página
... tentacles . 30. The same polypide slightly more advanced . Some tentacles have begun to develope themselves from the margin of the lophophore . 31. An embryo containing two polypides . 32. The same more advanced . The polypides have ...
... tentacles . 30. The same polypide slightly more advanced . Some tentacles have begun to develope themselves from the margin of the lophophore . 31. An embryo containing two polypides . 32. The same more advanced . The polypides have ...
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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 longitudinal 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