A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Resultados 6-10 de 31
Página 15
... ectocyst of the fresh - water Polyzoa appears in every case to be absolutely structure- less . The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have ...
... ectocyst of the fresh - water Polyzoa appears in every case to be absolutely structure- less . The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have ...
Página 20
... Ectocyst . 6. Endocyst . c . Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g ...
... Ectocyst . 6. Endocyst . c . Invaginated portion of endocyst adherent to the bases of the tentacula and entering into the formation of the cup . d . Muscular fibres surrounding the margin of the cup . e . Mouth . f . Esophagus . g ...
Página 21
... ectocyst and endocyst can be demonstrated ; it contains straight muscular fibres , which extend from the base of the cell to the point of attachment of the stalk ; and besides these , more delicate circular fibres can also be detected ...
... ectocyst and endocyst can be demonstrated ; it contains straight muscular fibres , which extend from the base of the cell to the point of attachment of the stalk ; and besides these , more delicate circular fibres can also be detected ...
Página 35
... ectocyst , to constitute the cell of the adult polyzoon . The subsequent changes are produced by the gemmation of new polypides , with their proper ectocysts and endocysts . Plumatella fruticosa presents similar developmental phenomena ...
... ectocyst , to constitute the cell of the adult polyzoon . The subsequent changes are produced by the gemmation of new polypides , with their proper ectocysts and endocysts . Plumatella fruticosa presents similar developmental phenomena ...
Página 36
... ectocyst and endocyst of the future cell . By this time the gemma has become considerably elongated and has acquired a clavate form , and its cavity begins to be cut off from that of the parent - cell by the formation of a septum . We ...
... ectocyst and endocyst of the future cell . By this time the gemma has become considerably elongated and has acquired a clavate form , and its cavity begins to be cut off from that of the parent - cell by the formation of a septum . We ...
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