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
... canal ) corresponds in part with the 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 ...
... canal ) corresponds in part with the 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 ...
Página 12
... canals of extreme delicacy , which constitute an irregular network in its substance . Besides the structure now described ... canal is revealed by peculiar , spherical or oval , brilliant corpuscles , which it almost always contains in ...
... canals of extreme delicacy , which constitute an irregular network in its substance . Besides the structure now described ... canal is revealed by peculiar , spherical or oval , brilliant corpuscles , which it almost always contains in ...
Página 13
... canals . In Cristatella , where the endocyst constitutes the whole of the conccium , it presents below a flattened disc , which closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on ...
... canals . In Cristatella , where the endocyst constitutes the whole of the conccium , it presents below a flattened disc , which closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on ...
Página 17
... canal to its termination just below the mouth . The histological structure of the alimentary tube in both the phylactolæmatous and gymnolæmatous forms is somewhat complex . It may , however , be easily enough made out in the different ...
... canal to its termination just below the mouth . The histological structure of the alimentary tube in both the phylactolæmatous and gymnolæmatous forms is somewhat complex . It may , however , be easily enough made out in the different ...
Página 18
... canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the peculiar ...
... canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the peculiar ...
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