PLA TYHELMINTHES 



III 



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 



Fig. 74. 



A. Diplozoon paradoxum, two united individuals. 



B. Polystoma intergerrimum. x about 100. After Zeller. 



C. Microcotyle mormyri. x 7. 



D, E. Two views of the chitinous framework of a suolcer of Axine helones, highly 

 magnified. After Lorenz. 



F. Aspidogaater conchicola. x about 25. After Aubert. 



G. Oyrodactylws degans. x about 80. After Wagner. 



suckers and papillae. This double organism is known as the 

 Biplozoon 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 



