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 11
... find that it possesses a very distinct structure . In Lophopus , which is particularly well adapted for observing the intimate structure of this membrane , we find it composed of large irregularly shaped cells , widely separated from ...
... find that it possesses a very distinct structure . In Lophopus , which is particularly well adapted for observing the intimate structure of this membrane , we find it composed of large irregularly shaped cells , widely separated from ...
Página 63
... find who has thought it necessary to adopt it . ‡ With the exception of the observations made by Trembley on his " Polype à Panache , ” when he described a complete alimentary canal and retractor muscles , those by Baker , who gives an ...
... find who has thought it necessary to adopt it . ‡ With the exception of the observations made by Trembley on his " Polype à Panache , ” when he described a complete alimentary canal and retractor muscles , those by Baker , who gives an ...
Página 105
... find here also , as in Alcyonella Benedeni , ova of a broadly elliptical shape and imperfectly developed annulus ; these last are always attached firmly to the walls of the tube . P. emarginata admits of an interesting comparison with ...
... find here also , as in Alcyonella Benedeni , ova of a broadly elliptical shape and imperfectly developed annulus ; these last are always attached firmly to the walls of the tube . P. emarginata admits of an interesting comparison with ...
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