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 11
... posterior part of the cœnćcium , but more closely approximated towards the orifices . These cells are filled with a perfectly colourless and transparent fluid . Under the action of acetic acid each is distinctly seen to be bounded by a ...
... posterior part of the cœnćcium , but more closely approximated towards the orifices . These cells are filled with a perfectly colourless and transparent fluid . Under the action of acetic acid each is distinctly seen to be bounded by a ...
Página 22
... posterior part of the cell in the unstalked forms of Polyzoa . It is simply this portion of the cell become so much constricted as to be no longer capable of containing the polypide , which is in consequence pushed onwards into the ...
... posterior part of the cell in the unstalked forms of Polyzoa . It is simply this portion of the cell become so much constricted as to be no longer capable of containing the polypide , which is in consequence pushed onwards into the ...
Página 26
... Posterior Parieto - vaginal Muscles . These consist of several radiating bands ( Pl . IV , fig . 4 ; V , figs . 5 , 6 ; IX , fig . 7 , t ) , longer and stronger than the last , behind which they arise , from the inner surface of the ...
... Posterior Parieto - vaginal Muscles . These consist of several radiating bands ( Pl . IV , fig . 4 ; V , figs . 5 , 6 ; IX , fig . 7 , t ) , longer and stronger than the last , behind which they arise , from the inner surface of the ...
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 ...
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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 character cilia cœnćcium 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 hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus 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 ŕ Panache polypide Polyzoon portion 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