PLATE IX. 



Fig. 1. The viscera of the male Common Sole in situ, natural size. 



Fig. 2. The body cavity of the male Common Sole after all the viscera have been 

 removed except the testes and kidneys, which are left in situ, natural size. 

 The wooden rod passes through the anus, the black bristle passes into the 

 urinary bladder, which lies beneath the cords containing the testicular 

 ducts. 



