A Monograph of the Fresh-water Polyzoa, Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-5 de 17
Página 5
... tunics of an Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . † ' Zoological Researches and Illustrations . ' By John V. Thompson . Cork , 1830 ...
... tunics of an Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . † ' Zoological Researches and Illustrations . ' By John V. Thompson . Cork , 1830 ...
Página 8
... tunics ; to the external I have given the name of Ectocyst , ‡ and to the internal that of Endocyst . The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar ...
... tunics ; to the external I have given the name of Ectocyst , ‡ and to the internal that of Endocyst . The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar ...
Página 13
... tunic , but from the delicacy of these tubes , and the transparency and want of colour of their contents , they escape detection under ordinary circumstances , and are first revealed only by the abnor- mal ( ? ) development of the ...
... tunic , but from the delicacy of these tubes , and the transparency and want of colour of their contents , they escape detection under ordinary circumstances , and are first revealed only by the abnor- mal ( ? ) development of the ...
Página 14
... tunic supplied by a peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of ...
... tunic supplied by a peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of ...
Página 27
... tunic , and taking a transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen very distinctly towards the anterior extremity of the cell , but it is not always easy to ...
... tunic , and taking a transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen very distinctly towards the anterior extremity of the cell , but it is not always easy to ...
Otras ediciones - Ver todas
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 character cilia cœnćcium 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 hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus 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 ŕ Panache polypide Polyzoon portion 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