A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-3 de 47
Página 21
... portion of the endocyst must then be viewed as adherent to the external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must ...
... portion of the endocyst must then be viewed as adherent to the external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must ...
Página 35
... portion , in which the polypides are suspended , protruded from the ciliated ( Pl . XI , fig . 32 ) ; but most frequently this unciliated portion is withdrawn within the ciliated , which is then closed over the aperture ( Pl . XI , fig ...
... portion , in which the polypides are suspended , protruded from the ciliated ( Pl . XI , fig . 32 ) ; but most frequently this unciliated portion is withdrawn within the ciliated , which is then closed over the aperture ( Pl . XI , fig ...
Página 114
... portion extends over the under surface of stones as a branched confervoid growth , the branches being given off either opposite to one another in pairs , or else singly , the develop- ment of the opposite branches being in the latter ...
... portion extends over the under surface of stones as a branched confervoid growth , the branches being given off either opposite to one another in pairs , or else singly , the develop- ment of the opposite branches being in the latter ...
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