A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 20
... transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces within it the termination of the ...
... transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces within it the termination of the ...
Página 21
... can also be detected in it . By the action of the straight and circular fibres , various motions , especially those of flexion and extension , can be transparent membrane in the form of a cup or calyx RESPIRATION AND CIRCULATION . 21.
... can also be detected in it . By the action of the straight and circular fibres , various motions , especially those of flexion and extension , can be transparent membrane in the form of a cup or calyx RESPIRATION AND CIRCULATION . 21.
Página 22
... transparent genera Cristatella and Lophopus to remain many hours in carmine without being able to detect a single particle of this pigment in the perigastric space , though I have seen this space rapidly empty itself on the removal of ...
... transparent genera Cristatella and Lophopus to remain many hours in carmine without being able to detect a single particle of this pigment in the perigastric space , though I have seen this space rapidly empty itself on the removal of ...
Página 25
... transparent spaces in the lophophore . * ( 4. ) Elevator Muscle of the Epistome . This is a small but very evident fasciculus ( Pl . II , fig . 24 , r ) , occupying the interior of the epistome , and visible through its transparent ...
... transparent spaces in the lophophore . * ( 4. ) Elevator Muscle of the Epistome . This is a small but very evident fasciculus ( Pl . II , fig . 24 , r ) , occupying the interior of the epistome , and visible through its transparent ...
Página 27
... transparent genus Lophopus , they seem to be present throughout the whole endocyst . By their action they evidently constrict the endocyst in a transverse direction , and thus aid in the protrusion of the polypide . A muscular tissue is ...
... transparent genus Lophopus , they seem to be present throughout the whole endocyst . By their action they evidently constrict the endocyst in a transverse direction , and thus aid in the protrusion of the polypide . A muscular tissue is ...
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 cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst 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 lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus 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 Zoophytes