A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
Dentro del libro
Resultados 1-5 de 37
Página 11
The cœnocium , in every case , except in Cristatella , is composed of two distinct membranes , which must be carefully distinguished from one another - an internal , the endocyst , which is always soft , transparent , and contractile ...
The cœnocium , in every case , except in Cristatella , is composed of two distinct membranes , which must be carefully distinguished from one another - an internal , the endocyst , which is always soft , transparent , and contractile ...
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 15
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here and there be observed , while Cristatella and Lophopus would seem to be quite deprived of them , the cells in these genera all opening into one another .
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here and there be observed , while Cristatella and Lophopus would seem to be quite deprived of them , the cells in these genera all opening into one another .
Página 18
In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well - fed animal , with a clear greenish - blue fluid . With the exception of the mouth and upper portion ...
In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well - fed animal , with a clear greenish - blue fluid . With the exception of the mouth and upper portion ...
Página 19
It was these excrementitious pellets that Turpin mistook for unarmed ova in Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular crown and the walls of the perigastric space would seem , among the Polyzoa ...
It was these excrementitious pellets that Turpin mistook for unarmed ova in Cristatella . ( 3. ) Organs of Respiration and Circulation . Upon the tentacular crown and the walls of the perigastric space would seem , among the Polyzoa ...
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 |