194
PAUL BRIEN
a I
Q\
q)
BI
FIG. 24. Semischematic diagram of the distal part of a funiculus of an adult
zooecium of Plumatella fungosa near its attachment to the wall. In the muscular
covering which constitutes the funicular epithelium, the cystigens have proliferated,
forming a massive cord which yields spherules anteriorly. These become hollow.
Each cystigenic vesicle joins with a mass of funicular cells becoming yolk-forming
cells. The cystigenic vesicle, flattening out, progressively envelops the mass of
deutoplasmic cells of the double, epithelial cystigen.
PAUL BRIEN
a I
Q\
q)
BI
FIG. 24. Semischematic diagram of the distal part of a funiculus of an adult
zooecium of Plumatella fungosa near its attachment to the wall. In the muscular
covering which constitutes the funicular epithelium, the cystigens have proliferated,
forming a massive cord which yields spherules anteriorly. These become hollow.
Each cystigenic vesicle joins with a mass of funicular cells becoming yolk-forming
cells. The cystigenic vesicle, flattening out, progressively envelops the mass of
deutoplasmic cells of the double, epithelial cystigen.