A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
Dentro del libro
Resultados 1-5 de 29
Página 10
... by the possession of a crescentic lophophore , they necessarily exclude not only Pedicellina , but even Fredericella , whose relations with the species furnished with a crescentic lophophore are of the most intimate kind .
... by the possession of a crescentic lophophore , they necessarily exclude not only Pedicellina , but even Fredericella , whose relations with the species furnished with a crescentic lophophore are of the most intimate kind .
Página 13
In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent space does not here exist . In Cristatella ( Pl . I ) the ectocyst would seem to be entirely absent ; and this genus . therefore , presents ...
In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent space does not here exist . In Cristatella ( Pl . I ) the ectocyst would seem to be entirely absent ; and this genus . therefore , presents ...
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 19
In Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful examination will render manifest its departure from the orbicular form , the side ...
In Fredericella the arms of the crescent are obsolete , and the lophophore here may , on a superficial view , appear orbicular ; but a careful examination will render manifest its departure from the orbicular form , the side ...
Página 22
... as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the festooning of the margin is most marked in Fredericella ; in some species of Plumatella it is scarcely perceptible .
... as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the festooning of the margin is most marked in Fredericella ; in some species of Plumatella it is scarcely perceptible .
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 |