A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 7
2 . 0 PLAN OF A POLYZOON . Fig . 1. Exserted . Fig . 2. Retracted . a . Region of
mouth , surrounded by tentacles . 6. Alimentary canal . c . Anus . d . Nervous
ganglion . e . Membranous investing sac . f . Testis . fl . Ovary . g . Retractor
muscle .
2 . 0 PLAN OF A POLYZOON . Fig . 1. Exserted . Fig . 2. Retracted . a . Region of
mouth , surrounded by tentacles . 6. Alimentary canal . c . Anus . d . Nervous
ganglion . e . Membranous investing sac . f . Testis . fl . Ovary . g . Retractor
muscle .
Página 8
Ş The sort of disc or stage which surrounds the mouth and bears the tentacula , I
have called Lophophore . || The Epistomer is a peculiar valve - like organ which
arches over the mouth in most of the fresh - water genera . The Perigastric ...
Ş The sort of disc or stage which surrounds the mouth and bears the tentacula , I
have called Lophophore . || The Epistomer is a peculiar valve - like organ which
arches over the mouth in most of the fresh - water genera . The Perigastric ...
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
opposite .
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
opposite .
Página 10
Lophophore bilateral ; mouth with an epistome . } LOPHOPEA ( fresh - water ) .
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh ...
Lophophore bilateral ; mouth with an epistome . } LOPHOPEA ( fresh - water ) .
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh ...
Página 15
... and should be examined by itself . * 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 .
... and should be examined by itself . * 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 .
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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
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella crown 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 important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs 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 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, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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