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 36
Página
... condition . Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr. Leidy , who has given us a description of them , which , however , is purely ...
... condition . Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr. Leidy , who has given us a description of them , which , however , is purely ...
Página 7
... condition . To give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very ...
... condition . To give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very ...
Página 8
... condition presented by the Polyzoa in their fully developed state . Definition of Terms . The old notion , which , by mistaking the zoological rank of the Polyzoa , erroneously referred them to the class of the Polypes , caused the same ...
... condition presented by the Polyzoa in their fully developed state . Definition of Terms . The old notion , which , by mistaking the zoological rank of the Polyzoa , erroneously referred them to the class of the Polypes , caused the same ...
Página 11
... condition ; in this respect differing remarkably from the marine species , in which the evertion of the endocyst is , perhaps , in all cases , if we except the anomalous genus Pedicellina , complete . The attachment of the endocyst to ...
... condition ; in this respect differing remarkably from the marine species , in which the evertion of the endocyst is , perhaps , in all cases , if we except the anomalous genus Pedicellina , complete . The attachment of the endocyst to ...
Página 12
... condition it continues till it terminates by being attached to the base of the tentacular crown . This thin , non - contractile portion of the endocyst constitutes the tentacular sheath which encloses and protects the tentacula during ...
... condition it continues till it terminates by being attached to the base of the tentacular crown . This thin , non - contractile portion of the endocyst constitutes the tentacular sheath which encloses and protects the tentacula during ...
Otras ediciones - Ver todas
A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
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 Linnæus 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