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 9
... posterior we may assume the position of the mouth as indicating the region of the animal which is to be designated as anterior , while the posterior region will then be that diametrically opposite . In fixing the dorsal and ventral ...
... posterior we may assume the position of the mouth as indicating the region of the animal which is to be designated as anterior , while the posterior region will then be that diametrically opposite . In fixing the dorsal and ventral ...
Página 28
... posterior fibres will check 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 ...
... posterior fibres will check 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 ...
Página 29
... posterior parieto - vaginal muscles , which , by straining upon the invaginated membrane , had already afforded a fixed line , on which it rolled outwards during eversion , This line constitutes the extreme limit of eversion , and that ...
... posterior parieto - vaginal muscles , which , by straining upon the invaginated membrane , had already afforded a fixed line , on which it rolled outwards during eversion , This line constitutes the extreme limit of eversion , and that ...
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 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 œsophagus 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 Zoophytes