Curtis. — Planaria. 
PLATE 12. 
(The figures are drawn from a reconstruction of a series of transverse sec¬ 
tions and reduced two thirds in the reproduction.) 
Fig. 33. The atrial organs of P. maculata and the ducts leading to them, from 
the dorsal aspect. The pharynx is shown in outline. The unicellu¬ 
lar glands leading into the vagina are indicated hy the arrows. The 
oviduct is drawn without its connecting yolk glands. Zeiss A X 2. 
Fig. 34. The same from the right side. The oviduct and vas deferens of the 
left side are omitted. Zeiss A X 2. 
