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 5
... entire course of the alimentary canal , and made himself master of almost every important point in their structure . He also perceived their close relation to the compound Ascidia , and was the first to designate them by a distinct name ...
... entire course of the alimentary canal , and made himself master of almost every important point in their structure . He also perceived their close relation to the compound Ascidia , and was the first to designate them by a distinct name ...
Página 19
... entire class of an orbicular figure ; but in the fresh - water genera Cristatella , Lophopus , Plumatella , and Alcyonella , its neural margin , or that which corresponds to the side of the rectum , is extended into two long triangular ...
... entire class of an orbicular figure ; but in the fresh - water genera Cristatella , Lophopus , Plumatella , and Alcyonella , its neural margin , or that which corresponds to the side of the rectum , is extended into two long triangular ...
Página 41
... entire mass into two separate portions , which move off in opposite directions . In Lophopus the process is very similar ; large specimens of this polyzoon have the endocyst constricted at intervals so as to give to the colony the ...
... entire mass into two separate portions , which move off in opposite directions . In Lophopus the process is very similar ; large specimens of this polyzoon have the endocyst constricted at intervals so as to give to the colony 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