v PLATYHELMINTHES 113 



89 B) appear over the region occupied by the apical cells of the 



B 



6 



FIG. 89. A, dorsal, and B, ventral views of larva of Yiuiyia aurantiaca in which 



metamorphosis is Beginning. (After Lang.) 



oc, eyespots. 



B 



6 



FKJ. 90. A, dorsal, and B, ventral views of larva of Ynnijin </ur<i u/i<<< in which 

 metamorphosis is almost complete. 



embryo, and the ciliated lobes become less and less prominent 

 VOL. i i 



