Curtis. — Flanaria. 
PLATE 17. 
(The figures of this plate are from camera lucida drawings of sections and 
were not reduced in the reproduction.) 
Fig. 49. A section through a young ovary just after it is distinguishable as 
such (see figure 53). The ova (o) are shown surrounded by the paren¬ 
chyma and among them are nuclei (ctn) which are probably homolo¬ 
gous with the nuclei of the supporting stroma of later stages. Zeiss 
D X 2. 
Fig. 50. A section through an ovary of an adult worm which has finished its 
reproductive season and in which all parts of the reproductive organs 
have disappeared except the ovaries and a remnant of the atrium. 
Zeiss 1) X 2. 
Fig. 51. A sagittal section through a larva of P. maculata at the stage when 
the adult pharynx {ph) is just forming. To show the relation of this 
to the embryonic pharynx {ph '). Zeiss A X 2. 
Fig. 52. A section through the adult ovary of a P. maculata, showing ripe ova 
ready to pass into the oviduct, the wall of which is cut through {od). 
