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 22
... Alcyonella apertures , which he names " bouches aquifères , " at the base of the tentacula ; but this distinguished naturalist is certainly given to the stalk , and these motions , when witnessed in a living and active group of ...
... Alcyonella apertures , which he names " bouches aquifères , " at the base of the tentacula ; but this distinguished naturalist is certainly given to the stalk , and these motions , when witnessed in a living and active group of ...
Página 23
... Alcyonella ; * and Siebold admits the correctness of this statement , and considers the aperture described by Meyen to be that through which the external water is admitted to the interior . † I have , however , fully convinced myself ...
... Alcyonella ; * and Siebold admits the correctness of this statement , and considers the aperture described by Meyen to be that through which the external water is admitted to the interior . † I have , however , fully convinced myself ...
Página 32
... Alcyonella and Paludicella , I have succeeded in making a careful examination of the generative system . In each of these both ovary and testis are found in the same cell . * During the months of July and August there may frequently be ...
... Alcyonella and Paludicella , I have succeeded in making a careful examination of the generative system . In each of these both ovary and testis are found in the same cell . * During the months of July and August there may frequently be ...
Página 33
... Alcyonella , separated , by a considerable interval , from the ovary ; it is connected with the stomach by a cylindrical chord , or posterior funiculus ( Pl . X , figs . 3 , 4 , 0 ) , similar in all respects to the funiculus of Alcyonella ...
... Alcyonella , separated , by a considerable interval , from the ovary ; it is connected with the stomach by a cylindrical chord , or posterior funiculus ( Pl . X , figs . 3 , 4 , 0 ) , similar in all respects to the funiculus of Alcyonella ...
Página 34
... Alcyonella . The stage represented in 3 has not been actually seen , but seems to be the only one that will supply the missing link . Towards the opening which leads from without into the central cavity the chorization is incomplete ...
... Alcyonella . The stage represented in 3 has not been actually seen , but seems to be the only one that will supply the missing link . Towards the opening which leads from without into the central cavity the chorization is incomplete ...
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