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 13
... Alcyonella flabellum and A. Benedeni , the earthy particles are entirely absent , from a longitudinal line which commences wide near the aperture of the cell , and gradually narrows as it passes backwards , when it soon assumes the ...
... Alcyonella flabellum and A. Benedeni , the earthy particles are entirely absent , from a longitudinal line which commences wide near the aperture of the cell , and gradually narrows as it passes backwards , when it soon assumes the ...
Página 15
... 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 . The ...
... 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 . The ...
Página 16
... Alcyonella a gizzard with an organization precisely similar to that of Bowerbankia . * The stomach is a large thick - walled sac , and may be divided into two portions , first a nearly cylindrical prolongation ( Pl . V , fig . 5 ; IX ...
... Alcyonella a gizzard with an organization precisely similar to that of Bowerbankia . * The stomach is a large thick - walled sac , and may be divided into two portions , first a nearly cylindrical prolongation ( Pl . V , fig . 5 ; IX ...
Página 17
... are probably muscular fibres ; they are particularly evident in Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the oesophagus , and totally 3 DIGESTIVE SYSTEM . 17.
... are probably muscular fibres ; they are particularly evident in Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the oesophagus , and totally 3 DIGESTIVE SYSTEM . 17.
Página 19
... Alcyonella , its neural margin , or that which corresponds to the side of the rectum , is extended into two long triangular lobes or arms , so as to cause the lophophore in these genera to present the form of a deep crescent , round ...
... Alcyonella , its neural margin , or that which corresponds to the side of the rectum , is extended into two long triangular lobes or arms , so as to cause the lophophore in these genera to present the form of a deep crescent , round ...
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 |