A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 7
... tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine ...
... tentacles . b . Alimentary canal . c . Anus . d . Nervous ganglion . e . Membranous investing sac . f . Testis . f ' . Ovary . g . Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine ...
Página 20
... tentacle upon one side , and towards the base on the other . Two very distinct layers ( Pl . IX , fig . 5 ) enter into the structure of the tentacula . The external layer consists of rounded cells filled with a colourless fluid , and ...
... tentacle upon one side , and towards the base on the other . Two very distinct layers ( Pl . IX , fig . 5 ) enter into the structure of the tentacula . The external layer consists of rounded cells filled with a colourless fluid , and ...
Página 21
... tentacle , and doubtless also enter into its structure . In Cristatella , a minute cavity , which looks as if it were cut off from the rest of the tube , may be very plainly seen in the extremity of each . tentacle ; this condition ...
... tentacle , and doubtless also enter into its structure . In Cristatella , a minute cavity , which looks as if it were cut off from the rest of the tube , may be very plainly seen in the extremity of each . tentacle ; this condition ...
Página 22
... tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the ... tentacles in Pedicellina , the only marine genus in which an epistome is also represented . ** The perigastric space ...
... tentacle , as a narrow triangular process , so as to present a sort of scalloped or festooned appearance ; the ... tentacles in Pedicellina , the only marine genus in which an epistome is also represented . ** The perigastric space ...
Página 25
... tentacles would seem to be chiefly due . The margin of the lophophore in the interval of the bands presents an oval transparent space , which looks exactly like an aperture , and it would seem to be these spaces which M. Van Beneden has ...
... tentacles would seem to be chiefly due . The margin of the lophophore in the interval of the bands presents an oval transparent space , which looks exactly like an aperture , and it would seem to be these spaces which M. Van Beneden has ...
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