A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Resultados 6-10 de 32
Página 17
... detecting in the stomach three distinct layers . Internally is a yellowish - brown layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugæ . These rugæ become less decided towards the fundus of the stomach , and in ...
... detecting in the stomach three distinct layers . Internally is a yellowish - brown layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugæ . These rugæ become less decided towards the fundus of the stomach , and in ...
Página 18
... detect no appearance of cilia further than a short distance down this tube . The structure of the intestine closely resembles that of the œsophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the ...
... detect no appearance of cilia further than a short distance down this tube . The structure of the intestine closely resembles that of the œsophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the ...
Página 19
... detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which presents a condition of the lophophore altogether unique and exceptional , * and some other marine genera in which a slight tendency to assume a bilateral form ...
... detected ( Pl . X , fig . 5 ) . With the exception of Pedicellina , which presents a condition of the lophophore altogether unique and exceptional , * and some other marine genera in which a slight tendency to assume a bilateral form ...
Página 20
... 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 intestine . d k Fig . 3 . f .... • h b ...
... 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 intestine . d k Fig . 3 . f .... • h b ...
Página 21
... 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.
... 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.
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