A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 6-10 de 32
Página 19
... Lophopus , Plumatella , and 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 ...
... Lophopus , Plumatella , and 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 ...
Página 22
... 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 the animal from the water , 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 the animal from the water , and ...
Página 23
... Lophopus crystallinus ; but this author con- tented himself with simply recording their existence , and made no attempt to explain them . Nordmann , ¶ who observed them both in fresh water and marine genera , not being able to detect ...
... Lophopus crystallinus ; but this author con- tented himself with simply recording their existence , and made no attempt to explain them . Nordmann , ¶ who observed them both in fresh water and marine genera , not being able to detect ...
Página 27
... 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 also very evident ...
... 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 also very evident ...
Página 31
... Lophopus , and other genera with crescentic lophophores , the ganglion may be seen giving off from each side a rather thick chord ( Pl . II , fig . 24 , a ) which immediately enters the tubular arms of the lophophore , and then , after ...
... Lophopus , and other genera with crescentic lophophores , the ganglion may be seen giving off from each side a rather thick chord ( Pl . II , fig . 24 , a ) which immediately enters the tubular arms of the lophophore , and then , after ...
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