A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-5 de 28
Página 3
... similar one in certain marine polypoid animals arrested the attention of naturalists , that its importance , and its true bearing on systematic zoology , began to be appreciated . The in- vestigations of Trembley and Baker , however ...
... similar one in certain marine polypoid animals arrested the attention of naturalists , that its importance , and its true bearing on systematic zoology , began to be appreciated . The in- vestigations of Trembley and Baker , however ...
Página 8
... similar systems holding a definite position relatively to one another , while all continue organically united , and we shall then have the actual condition presented by the Polyzoa in their fully developed state . Definition of Terms ...
... similar systems holding a definite position relatively to one another , while all continue organically united , and we shall then have the actual condition presented by the Polyzoa in their fully developed state . Definition of Terms ...
Página 15
... similar in all those species in which the lophophore is bilateral ( Phylactolæmata ) ; these we shall therefore consider together ; Paludicella , which , with the exception of Urnatella ( ? ) , is the only fresh - water representative ...
... similar in all those species in which the lophophore is bilateral ( Phylactolæmata ) ; these we shall therefore consider together ; Paludicella , which , with the exception of Urnatella ( ? ) , is the only fresh - water representative ...
Página 16
... 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 , fig . 7 , g ) , which by one extremity immediately ...
... 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 , fig . 7 , g ) , which by one extremity immediately ...
Página 19
... similar disposition in Urnatella . The two arms of the lophophore have the tentacula confined to their outer margin . They are The tentacula are tubular , closed at their free extremity RESPIRATION AND CIRCULATION . 19.
... similar disposition in Urnatella . The two arms of the lophophore have the tentacula confined to their outer margin . They are The tentacula are tubular , closed at their free extremity RESPIRATION AND CIRCULATION . 19.
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
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph