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TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



densely covered with these structures ; the tail also con- 

 tained a few; the blind side of the fish also showed a 

 certain number, but far less than on the ocular surface- 

 probably on account of the attrition caused by the fish 

 creeping over the surface of the sand. The little bodies 

 in question were quite colourless, but very opaque, and 

 easily discernible by the naked eye. They were nearly 

 spherical in shape ; flattened perhaps in one direction, and 

 where they were closely packed together — as in the 

 clusters on the fins — their shapes were polygonal. Their 

 average diameter was about 0*32 mm. 







Fig. 19. Skin of Sole infested with Lymphocystis johnstonei. 

 x 60 dia. 



The fish had been preserved in formalin and the skin 

 and the structures on and in connection with it were well 

 preserved, but the body cavity had not been opened and 

 the viscera were not in good condition for close examina- 

 tion. But, apparently, the peritoneum and mesenteries 



