A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 32
... bodies ( fig . 23 ) without any terminal enlargement . They present distinct though somewhat sluggish undulatory motions . The distal portion of the testis is more developed than the portion which lies nearer to the stomach of the ...
... bodies ( fig . 23 ) without any terminal enlargement . They present distinct though somewhat sluggish undulatory motions . The distal portion of the testis is more developed than the portion which lies nearer to the stomach of the ...
Página 35
... bodies always originate in the endocyst . In Lophopus , Alcyonella , Plumatella , and Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ are produced very regularly from ...
... bodies always originate in the endocyst . In Lophopus , Alcyonella , Plumatella , and Fredericella , they occur without any very regular order near the orifice of the cell . In Cristatella the gemmæ are produced very regularly from ...
Página 36
... bodies , having a high refracting power , but in which I could not trace the double outline of a true cell - wall . The polypide is now seen to be suspended from the wall of the cell by a membranous sac . This sac is closely adherent to ...
... bodies , having a high refracting power , but in which I could not trace the double outline of a true cell - wall . The polypide is now seen to be suspended from the wall of the cell by a membranous sac . This sac is closely adherent to ...
Página 37
... bodies of a very peculiar nature occur at certain seasons , lying loose in the perigastric space . To these bodies , for reasons to be presently mentioned , I propose to give the name of Statoblasts . From the earliest period that the ...
... bodies of a very peculiar nature occur at certain seasons , lying loose in the perigastric space . To these bodies , for reasons to be presently mentioned , I propose to give the name of Statoblasts . From the earliest period that the ...
Página 40
... bodies is similar to that of the others , and I have not succeeded in witnessing the escape from them of the young . In Alcyonella fungosa and Lophopus crystallinus I have also occasionally seen bodies , which differ from the ordinary ...
... bodies is similar to that of the others , and I have not succeeded in witnessing the escape from them of the young . In Alcyonella fungosa and Lophopus crystallinus I have also occasionally seen bodies , which differ from the ordinary ...
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