A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... Urnatella , which I have not yet had an opportunity of examining in a living condition . Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr ...
... Urnatella , which I have not yet had an opportunity of examining in a living condition . Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr ...
Página 10
... Urnatella among the Gymnolæmatous Polyzoa must for the present be viewed as a provisional expedient , subject to alteration as its structure becomes better known . See the description of the genus farther on . The terms Cyclostomata ...
... Urnatella among the Gymnolæmatous Polyzoa must for the present be viewed as a provisional expedient , subject to alteration as its structure becomes better known . See the description of the genus farther on . The terms Cyclostomata ...
Página 11
... Urnatella , the power of protrusion and retraction is very imperfect , and is here limited to such change of position as is connected with a slight extension and flexion of the œsophagus . consist almost entirely of bodies exactly ...
... Urnatella , the power of protrusion and retraction is very imperfect , and is here limited to such change of position as is connected with a slight extension and flexion of the œsophagus . consist almost entirely of bodies exactly ...
Página 15
... Urnatella ( ? ) , is the only fresh - water representative of the division with orbicular lophophore ( Gymnolæmata ) , presents some peculiarities , and should be examined by itself . * See Schlossberger , Zur näheren Kenntniss der ...
... Urnatella ( ? ) , is the only fresh - water representative of the division with orbicular lophophore ( Gymnolæmata ) , presents some peculiarities , and should be examined by itself . * See Schlossberger , Zur näheren Kenntniss der ...
Página 17
... Urnatella should prove an exception , is found in all the other fresh - water species . The upper part of the oesophagus ( fig . 3 , f ) is wide , and may perhaps here , more decidedly than in the other species , be distinguished as ...
... Urnatella should prove an exception , is found in all the other fresh - water species . The upper part of the oesophagus ( fig . 3 , f ) is wide , and may perhaps here , more decidedly than in the other species , be distinguished as ...
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