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 7
... surrounded by tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach ...
... surrounded by tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach ...
Página 14
... surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular septum has , without doubt , some office to perform besides that of simply com ...
... surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular septum has , without doubt , some office to perform besides that of simply com ...
Página 17
... surrounding the stomach , and are probably muscular fibres ; they are particularly evident in Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the oesophagus , and totally 3 ...
... surrounding the stomach , and are probably muscular fibres ; they are particularly evident in Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the oesophagus , and totally 3 ...
Página 19
... surrounding water and rapidly whirled away by the tentacular currents . It was these excrementitious pellets that Turpin mistook for unarmed ova in Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular crown ...
... surrounding water and rapidly whirled away by the tentacular currents . It was these excrementitious pellets that Turpin mistook for unarmed ova in Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular crown ...
Página 20
... surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h . Rectum . i . Anus . k . Epistome . 1. Ganglion . m . Generative organ . n . Retractor muscle . o . Lophophore . The tentacula are connected to one another ...
... surrounding the margin of the cup . e . Mouth . f . Esophagus . g . Stomach . h . Rectum . i . Anus . k . Epistome . 1. Ganglion . m . Generative organ . n . Retractor muscle . o . Lophophore . The tentacula are connected to one another ...
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