A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 16
... stomach ; it becomes gradually narrower as it approaches the latter , into which it opens by a very distinct conical projection ( Pl . III , fig . 7 , ƒ ' ) . To the œsophagus immediately succeeds the stomach , without the intervention ...
... stomach ; it becomes gradually narrower as it approaches the latter , into which it opens by a very distinct conical projection ( Pl . III , fig . 7 , ƒ ' ) . To the œsophagus immediately succeeds the stomach , without the intervention ...
Página 17
... stomach in the other fresh - water Polyzoa , and to the gizzard in certain marine species . This sac is much more distinct from the great cavity of the stomach than in the other Polyzoa of fresh water . It enters this cavity near its ...
... stomach in the other fresh - water Polyzoa , and to the gizzard in certain marine species . This sac is much more distinct from the great cavity of the stomach than in the other Polyzoa of fresh water . It enters this cavity near its ...
Página 18
... stomach , the former being here largely developed ( A ́ ) , while the internal or hepatic layer of the stomach is entirely absent , and there are no longitudinal rugæ . The mouth and upper part of the œsophagus are in all the genera ...
... stomach , the former being here largely developed ( A ́ ) , while the internal or hepatic layer of the stomach is entirely absent , and there are no longitudinal rugæ . The mouth and upper part of the œsophagus are in all the genera ...
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 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 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