A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 6-10 de 27
Página 14
... complete by the aperture in its centre being closed by a peculiar body , which projects into the cavity of the cell at each side . The structure of this body is remark- able ; it consists of a central mass , surrounded by a distinct ...
... complete by the aperture in its centre being closed by a peculiar body , which projects into the cavity of the cell at each side . The structure of this body is remark- able ; it consists of a central mass , surrounded by a distinct ...
Página 20
... completing the tentacular crater so as entirely to disguise the hippocrepian character , and give to the crown of tentacula the form presented by the infundibulate genera . The result of this arrangement is , that the anus presents the ...
... completing the tentacular crater so as entirely to disguise the hippocrepian character , and give to the crown of tentacula the form presented by the infundibulate genera . The result of this arrangement is , that the anus presents the ...
Página 28
... complete evagination during exsertion . ( 3. ) Posterior Parieto - vaginal Muscles . These are about four thin fasciculi ( Pl . X , figs . 3 , 4 , t ) , first pointed out by Mr. Hancock ; they arise from the inner surface of the ...
... complete evagination during exsertion . ( 3. ) Posterior Parieto - vaginal Muscles . These are about four thin fasciculi ( Pl . X , figs . 3 , 4 , t ) , first pointed out by Mr. Hancock ; they arise from the inner surface of the ...
Página 30
... complete , the sphincter closes the tentacular sheath , and the polypide rests secure in the recesses of the cell . The muscles of these animals are especially interesting in a physiological point of view , for they seem to present us ...
... complete , the sphincter closes the tentacular sheath , and the polypide rests secure in the recesses of the cell . The muscles of these animals are especially interesting in a physiological point of view , for they seem to present us ...
Página 35
... complete evagination of the unciliated portion is still prevented by the bands already mentioned , but we now find that these bands , which must not be confounded with the permanent parieto - vaginal bands of the adult , have ...
... complete evagination of the unciliated portion is still prevented by the bands already mentioned , but we now find that these bands , which must not be confounded with the permanent parieto - vaginal bands of the adult , have ...
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