A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 7
Region of mouth , surrounded by tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of ...
Region of mouth , surrounded by tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of ...
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 9
In fixing the meaning of the terms anterior and posterior we may assume the position of the mouth as indicating the region of the animal which is to be designated as anterior , while the posterior region will then be that diametrically ...
In fixing the meaning of the terms anterior and posterior we may assume the position of the mouth as indicating the region of the animal which is to be designated as anterior , while the posterior region will then be that diametrically ...
Página 10
Lophophore bilateral ; mouth with an epistome . PHYLACTOLEMATA . * Lophophore orbicular , nearly so ; no epistome . GYMNOLÆMATA . † or Arms of lophophore free or obsolete . " } Arms of lophophore united at the extremities . at ...
Lophophore bilateral ; mouth with an epistome . PHYLACTOLEMATA . * Lophophore orbicular , nearly so ; no epistome . GYMNOLÆMATA . † or Arms of lophophore free or obsolete . " } Arms of lophophore united at the extremities . at ...
Página 15
See Schlossberger , Zur näheren Kenntniss der Mushelschalen , des Byssus und der Chitinfrage ' Ann . der Chem , und Pharm . , ' xcviii , 99 . a . Phylactolæmata . The mouth ( Pl . II DIGESTIVE SYSTEM . 15.
See Schlossberger , Zur näheren Kenntniss der Mushelschalen , des Byssus und der Chitinfrage ' Ann . der Chem , und Pharm . , ' xcviii , 99 . a . Phylactolæmata . The mouth ( Pl . II DIGESTIVE SYSTEM . 15.
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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