A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 10
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh - water ) . Polypide completely retractile ; evagination of tentacular sheath
imperfect .
PHYLACTOLÆMATA . * Arms of lophophore united at the extremities .
PediCELLINEAT ( marine ) . Polypide only partially retractile ? URNATELLEA $ (
fresh - water ) . Polypide completely retractile ; evagination of tentacular sheath
imperfect .
Página 12
When treated with acetic acid , they are plainly seen to be composed of greatly
elongated fusiform cells , having their pointed extremities in connection with one
another . Each of these cells is then also seen to contain a nucleus with
nucleolus ...
When treated with acetic acid , they are plainly seen to be composed of greatly
elongated fusiform cells , having their pointed extremities in connection with one
another . Each of these cells is then also seen to contain a nucleus with
nucleolus ...
Página 16
7 , 9 ) , which by one extremity immediately receives the æsophagus , while by
the other it is continuous with the remaining portion of the stomach ; it may be
called the cardiac cavity of the stomach . The second division ( g ) forms the
greater ...
7 , 9 ) , which by one extremity immediately receives the æsophagus , while by
the other it is continuous with the remaining portion of the stomach ; it may be
called the cardiac cavity of the stomach . The second division ( g ) forms the
greater ...
Página 17
The great cavity ( 9 ) of the stomach is of a nearly cylindrical figure ; from its upper
extremity arises the intestine ( ) . This tube presents , just after its origin , a wide
dilation , and then suddenly contracting , continues as a narrow cylindrical canal
...
The great cavity ( 9 ) of the stomach is of a nearly cylindrical figure ; from its upper
extremity arises the intestine ( ) . This tube presents , just after its origin , a wide
dilation , and then suddenly contracting , continues as a narrow cylindrical canal
...
Página 18
... in the wide pyloric extremity of this tube . After continuing here for a while in a
state of rest , and probably yielding to the absorbent tissues its remaining
nutritious elements , portions in the form of roundish pellets 18 DIGESTIVE
SYSTEM .
... in the wide pyloric extremity of this tube . After continuing here for a while in a
state of rest , and probably yielding to the absorbent tissues its remaining
nutritious elements , portions in the form of roundish pellets 18 DIGESTIVE
SYSTEM .
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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 admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella crown described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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