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 20
Página 99
... branches having no extensive surface of attachment , soon become free , and a more or less entangled bushy mass will be produced . These two variations are quite accidental , and altogether the result of external agencies influencing ...
... branches having no extensive surface of attachment , soon become free , and a more or less entangled bushy mass will be produced . These two variations are quite accidental , and altogether the result of external agencies influencing ...
Página 109
... branches , which are united to one another by a simple connecting tube , from which they extend in two opposite directions . The ectocyst is brown , becoming lighter towards the extremities of the branches , and finally extending as a ...
... branches , which are united to one another by a simple connecting tube , from which they extend in two opposite directions . The ectocyst is brown , becoming lighter towards the extremities of the branches , and finally extending as a ...
Página 114
... 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 case suppressed . Besides the portion which thus continues closely adherent to 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 case suppressed . Besides the portion which thus continues closely adherent to the ...
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