A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
Dentro del libro
Resultados 1-3 de 65
Página 17
The intestine is very wide at its origin , and passes up along the side of the
cardiac cavity and esophagus , rapidly diminishing in diameter till it terminates in
a distinct anus by perforating the tentacular sheath just below the mouth , and at
the ...
The intestine is very wide at its origin , and passes up along the side of the
cardiac cavity and esophagus , rapidly diminishing in diameter till it terminates in
a distinct anus by perforating the tentacular sheath just below the mouth , and at
the ...
Página 66
In this he constitutes a distinct sub - class of his Polypiaires , under the name of
Polypiaria dubia for such as have the tentacula borne upon two diverging arms ,
in the form of a horseshoe . It includes the fresh - water genera then known ...
In this he constitutes a distinct sub - class of his Polypiaires , under the name of
Polypiaria dubia for such as have the tentacula borne upon two diverging arms ,
in the form of a horseshoe . It includes the fresh - water genera then known ...
Página 109
It is throughout closely adherent to the surface on which it grows , and is very
remarkable by its mode of development in two distinct groups of branches , which
are united to one another by a simple connecting tube , from which they extend in
...
It is throughout closely adherent to the surface on which it grows , and is very
remarkable by its mode of development in two distinct groups of branches , which
are united to one another by a simple connecting tube , from which they extend in
...
Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous 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 Hist 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 stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young