PEATYVHELMINTHES To 
able to attach itself to the dorsal papilla of the first, and in 
this condition there is an actual fusion of the tissues of the 
Dj) = 
MHavpose® 
C 
Fic. 74. 
A. Diplozoon paradozum, two united individuals. 
B. Polystoma intergerrimum. x about 100. After Zeller. 
C. Microcotyle mormyri. x 7. 
E. Two views of the chitinous framework of a sucker of Aine belones, highly 
magnified. After Lorenz. 
F. Aspidogaster conchicola. x about 25. After Aubert. 
G. Gyrodactylus elegans. x about 80. After Wagner. 
suckers and papillae. This double organism is known as the 
Diplozoon paradoxum (Fig. 74). 
Polystoma intergerrimum, another of the Monogenea, is 
common in the bladder of the frog (Fig. 74). It lays its eggs 
in the spring, and by protruding its body from the anus of the 
frog, manages to deposit them in the water. The young larvae 
