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 7
... organs in the form of ovary and testis occupying some portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as correct an idea apart from all theoretical ...
... organs in the form of ovary and testis occupying some portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as correct an idea apart from all theoretical ...
Página 8
... organs , circumambient fluid , and investing sacs , repeating itself by gemmation , and thus producing one or more ... organ which arches over the mouth in most of the fresh - water genera . The Perigastric ** space is the space ...
... organs , circumambient fluid , and investing sacs , repeating itself by gemmation , and thus producing one or more ... organ which arches over the mouth in most of the fresh - water genera . The Perigastric ** space is the space ...
Página 10
... by Busk , to indicate the primary subdivisions of the marine Gymnolæmatous Polyzoa . ( Voyage of " The Rattlesnake , ' vol . i , Appendix , p . 346. ) 2 . ANATOMY . A. Organs for the Preservation of 10 ORDERS AND SUB - ORDERS OF POLYZOA .
... by Busk , to indicate the primary subdivisions of the marine Gymnolæmatous Polyzoa . ( Voyage of " The Rattlesnake , ' vol . i , Appendix , p . 346. ) 2 . ANATOMY . A. Organs for the Preservation of 10 ORDERS AND SUB - ORDERS OF POLYZOA .
Página 11
... Organs for the Preservation of the Individual . ( 1 ) Dermal System . Canacium . - The Polyzoa being all composite animals , the cœnocium constitutes essen- tially an assemblage of little cells or chambers , of very various form ...
... Organs for the Preservation of the Individual . ( 1 ) Dermal System . Canacium . - The Polyzoa being all composite animals , the cœnocium constitutes essen- tially an assemblage of little cells or chambers , of very various form ...
Página 15
... Organs of Digestion . The digestive system is very similar in all those species in which the lophophore is bilateral ( Phylactolæmata ) ; these we shall therefore consider together ; Paludicella , which , with the exception of Urnatella ...
... Organs of Digestion . The digestive system is very similar in all those species in which the lophophore is bilateral ( Phylactolæmata ) ; these we shall therefore consider together ; Paludicella , which , with the exception of Urnatella ...
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