A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 11-15 de 39
Página 21
... external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very limited . When the polypide desires to withdraw under ...
... external portion externally , and to the tentacula ( and calyx ? ) internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very limited . When the polypide desires to withdraw under ...
Página 22
... external fluid can gain admittance to the interior . I have allowed the 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 ...
... external fluid can gain admittance to the interior . I have allowed the 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 ...
Página 23
... external water is admitted to the interior . † I have , however , fully convinced myself that no such aperture exists , and the phenomenon described by Meyen must certainly be due to an accidental rupture of the tissues , though Van ...
... external water is admitted to the interior . † I have , however , fully convinced myself that no such aperture exists , and the phenomenon described by Meyen must certainly be due to an accidental rupture of the tissues , though Van ...
Página 24
... external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to their presence on the alimen- tary canal ; and I cannot help thinking ...
... external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to their presence on the alimen- tary canal ; and I cannot help thinking ...
Página 31
... external surface of the œsophagus , on its rectal aspect just below the mouth , an oval body of a yellowish colour , and presenting a somewhat lobed outline ( Pl . II , fig . 24 ; V , fig . 5 ; IX , fig . 7 , w ) . That it is a nervous ...
... external surface of the œsophagus , on its rectal aspect just below the mouth , an oval body of a yellowish colour , and presenting a somewhat lobed outline ( Pl . II , fig . 24 ; V , fig . 5 ; IX , fig . 7 , w ) . That it is a nervous ...
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