PLATE 

 12 

 11 

 25 



25 

 5 



28 

 12 



. 31-37 

 1 



M 

 2 

 6 

 9 

 9 



. 38-43 



.24,25 



8 



10 



28 



. 7-15 



1 



12 



ERRATUM. 



VIII. HEADING. For Didomum lanceolatum read Distomum hepaiicum. 



