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 1-5 de 33
Página 4
... gives an account of the animals of Flustra carbasea and F. foliacea , and shows them to be quite different from the hydroid polype of the Sertulariæ ; but he seems as yet to have had but an imperfect knowledge of them , and I cannot ...
... gives an account of the animals of Flustra carbasea and F. foliacea , and shows them to be quite different from the hydroid polype of the Sertulariæ ; but he seems as yet to have had but an imperfect knowledge of them , and I cannot ...
Página 7
... give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very various ...
... give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very various ...
Página 9
... gives to the former region the name of " hæmal , " and to the latter that of " neural , " thus applying to the Mollusca the terms already so happily employed by Owen in his designation of the regions of the vertebrate skeleton . These ...
... gives to the former region the name of " hæmal , " and to the latter that of " neural , " thus applying to the Mollusca the terms already so happily employed by Owen in his designation of the regions of the vertebrate skeleton . These ...
Página 13
... give to the ectocyst an opacity which renders an observation of the contained parts a matter of considerable difficulty ... gives to the orifice of the cell the appearance of having a deep notch on one side . In Frede- ricella a slightly ...
... give to the ectocyst an opacity which renders an observation of the contained parts a matter of considerable difficulty ... gives to the orifice of the cell the appearance of having a deep notch on one side . In Frede- ricella a slightly ...
Página 19
... give a description of it here . The general appearance of Pedicellina is that of a gymnolæmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle . The gymnolæmatous character , however , is wholly ...
... give a description of it here . The general appearance of Pedicellina is that of a gymnolæmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle . The gymnolæmatous character , however , is wholly ...
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