A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-3 de 27
Página 13
... ectocyst or external investment ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX , fig . 7 ; X , fig . 4 , a ) is , in most of the species , composed of a tough pregamentaceous brown membrane , strength- ened by the deposition of ...
... ectocyst or external investment ( Pl . III , fig . 7 ; V , figs . 5 , 6 ; IX , fig . 7 ; X , fig . 4 , a ) is , in most of the species , composed of a tough pregamentaceous brown membrane , strength- ened by the deposition of ...
Página 14
... ectocyst , and having the place of this tunic supplied by a peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ...
... ectocyst , and having the place of this tunic supplied by a peculiar unorganized gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) . This gelatinous - looking investment is , however , a true ectocyst ...
Página 15
... ectocyst of the fresh - water Polyzoa appears in every case to be absolutely structure- less . The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have ...
... ectocyst of the fresh - water Polyzoa appears in every case to be absolutely structure- less . The fact of cellulose being a constituent of the test of the Tunicata , induced me to look for it in the ectocyst of the Polyzoa , but I have ...
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 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 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