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 44
... branchial " and " thoracic sinuses " of Milne - Edwards , one placed upon the neural , and the other upon the hæmal side of the sac , that they constitute , in fact , a series of communicating channels , passing transversely between ...
... branchial " and " thoracic sinuses " of Milne - Edwards , one placed upon the neural , and the other upon the hæmal side of the sac , that they constitute , in fact , a series of communicating channels , passing transversely between ...
Página 45
... branchial sinus of Clavelina , a repre- sentative of the lophophore of Plumatella , while the transverse bars which pass off at either side from this sinus , and are richly ciliated , will correspond to the ciliated tentacula of the ...
... branchial sinus of Clavelina , a repre- sentative of the lophophore of Plumatella , while the transverse bars which pass off at either side from this sinus , and are richly ciliated , will correspond to the ciliated tentacula of the ...
Página 46
... branchial sinus to be depressed towards the neural side of the Ascidian , by a rotation round its oral extremity through an angle of 90 ° in a vertical plane passing through the mouth and anus ; its position from longitudinal will thus ...
... branchial sinus to be depressed towards the neural side of the Ascidian , by a rotation round its oral extremity through an angle of 90 ° in a vertical plane passing through the mouth and anus ; its position from longitudinal will thus ...
Página 47
... branchial sac for some distance from their extremities , an important fact not easily reconcilable with the view that the branchial sac of an Ascidian is nothing more than a perforated pharynx permeated by a vascular network . In ...
... branchial sac for some distance from their extremities , an important fact not easily reconcilable with the view that the branchial sac of an Ascidian is nothing more than a perforated pharynx permeated by a vascular network . In ...
Página 48
... branchial portion , and a posterior or cloacal portion . Now the main tube may be obviously compared to the great " branchial sinus " of Clavelina , and the lateral branches to the transverse respiratory bars of that tunicate . The ...
... branchial portion , and a posterior or cloacal portion . Now the main tube may be obviously compared to the great " branchial sinus " of Clavelina , and the lateral branches to the transverse respiratory bars of that tunicate . The ...
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