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 12
... continuous layer . There can be no doubt that these fibres of the endocyst are muscular , and that it is to their presence that the high degree of contractility enjoyed by the endocyst of Lophopus is in a great measure , if not entirely ...
... continuous layer . There can be no doubt that these fibres of the endocyst are muscular , and that it is to their presence that the high degree of contractility enjoyed by the endocyst of Lophopus is in a great measure , if not entirely ...
Página 16
... continuous on the neural side , with a hol ow valve - like organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its ...
... continuous on the neural side , with a hol ow valve - like organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its ...
Página 19
... continuous series . This condition of the lophophore is found in no marine species . In Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful ...
... continuous series . This condition of the lophophore is found in no marine species . In Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful ...
Página 21
... continuous lining extending over nearly the whole of the internal surface of the stomach , is here confined to the anterior portion of this sac , in the space between the cardiac and pyloric orifices , where it constitutes a dark brown ...
... continuous lining extending over nearly the whole of the internal surface of the stomach , is here confined to the anterior portion of this sac , in the space between the cardiac and pyloric orifices , where it constitutes a dark brown ...
Página 25
... continuous with one another below , and when they arrive at the intervals between the roots of the tentacula , each divides into two others , which would appear to run along the opposed sides of two neighbouring tentacula . M. Van ...
... continuous with one another below , and when they arrive at the intervals between the roots of the tentacula , each divides into two others , which would appear to run along the opposed sides of two neighbouring tentacula . M. Van ...
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