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
... Fredericella , whose relations with the species furnished with a crescentic lophophore are of the most intimate kind . Hippocrepianism , therefore , though of great interest as a morphological fact , tending , as will be afterwards ...
... Fredericella , whose relations with the species furnished with a crescentic lophophore are of the most intimate kind . Hippocrepianism , therefore , though of great interest as a morphological fact , tending , as will be afterwards ...
Página 15
... Fredericella sultana , imperfect septa may here and there be observed , while Cristatella and Lophopus would seem to be quite deprived of them , the cells in these genera all opening into one another . The ectocyst of the fresh - water ...
... Fredericella sultana , imperfect septa may here and there be observed , while Cristatella and Lophopus would seem to be quite deprived of them , the cells in these genera all opening into one another . The ectocyst of the fresh - water ...
Página 19
... Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful examination will render manifest its departure from the orbicular form , the side corresponding ...
... Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful examination will render manifest its departure from the orbicular form , the side corresponding ...
Página 22
... Fredericella ; in some species of Plumatella it is scarcely perceptible . A high power of the microscope , and carefully adjusted illumination , will enable us to detect in the calyciform membrane certain delicate anastomosing lines ...
... Fredericella ; in some species of Plumatella it is scarcely perceptible . A high power of the microscope , and carefully adjusted illumination , will enable us to detect in the calyciform membrane certain delicate anastomosing lines ...
Página 35
... Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ are produced very regularly from constant points on the sides of the previously existing cells , and the new cells thus ...
... Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ are produced very regularly from constant points on the sides of the previously existing cells , and the new cells thus ...
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