A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
Dentro del libro
Resultados 1-5 de 27
Página 3
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid bodies , each characterised by the possession of an elegant crown of tentacula borne on the margin of a crescent - shaped disc .
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid bodies , each characterised by the possession of an elegant crown of tentacula borne on the margin of a crescent - shaped disc .
Página 8
The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar valve - like organ which arches over the mouth in most of the fresh - water genera .
The sort of disc or stage which surrounds the mouth and bears the tentacula , I have called Lophophore . || The Epistome is a peculiar valve - like organ which arches over the mouth in most of the fresh - water genera .
Página 13
In Cristatella , where the endocyst constitutes the whole of the cœnocium , it presents below a flattened disc , which closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on the stems ...
In Cristatella , where the endocyst constitutes the whole of the cœnocium , it presents below a flattened disc , which closely resembles the foot of a gasteropodous mollusc , and on which this singular colony creeps about on the stems ...
Página 19
The tentacular crown of a Polyzoon consists of two portions , namely , first , a sort of stage or disc ( the lophophore ) ( Pl . II , fig . 24 ; IX , fig . 7 ; X , figs . 3 , 4 , k ) which surrounds the mouth ; and secondly , a series ...
The tentacular crown of a Polyzoon consists of two portions , namely , first , a sort of stage or disc ( the lophophore ) ( Pl . II , fig . 24 ; IX , fig . 7 ; X , figs . 3 , 4 , k ) which surrounds the mouth ; and secondly , a series ...
Página 26
... but they do not always present the appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or see them breaking into the discs , which may be observed in the great retractors of the polypide .
... but they do not always present the appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or see them breaking into the discs , which may be observed in the great retractors of the polypide .
Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives Hancock Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |