A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 19
... genera in which a slight tendency to assume a bilateral form may be observed , but which never possess an epistome , the lophophore in the marine genera is always orbicular . The lophophore in all the genera forms the roof of the ...
... genera in which a slight tendency to assume a bilateral form may be observed , but which never possess an epistome , the lophophore in the marine genera is always orbicular . The lophophore in all the genera forms the roof of the ...
Página 48
... genera present no difficulty , for the orbicular lophophore , after all , is but an unimportant modification of the crescentic , and is connected to it by a series of intermediate forms . The arms of the lophophore in Plumatella have ...
... genera present no difficulty , for the orbicular lophophore , after all , is but an unimportant modification of the crescentic , and is connected to it by a series of intermediate forms . The arms of the lophophore in Plumatella have ...
Página 76
... genera of fresh - water Polyzoa : ORDERS . * SUB - ORDERS . FAMILIES . GENERA . Cœnocium free , loco- motive . CRISTATELLIDE . Cristatella . Conocium massive ; PHYLACTOLÆMATA . LOPHOPEA . Lophophore with two long arms . Arms of lo ...
... genera of fresh - water Polyzoa : ORDERS . * SUB - ORDERS . FAMILIES . GENERA . Cœnocium free , loco- motive . CRISTATELLIDE . Cristatella . Conocium massive ; PHYLACTOLÆMATA . LOPHOPEA . Lophophore with two long arms . Arms of lo ...
Otras ediciones - Ver todas
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 cœnocium 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 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