vni 



"Vallentin, Esq., of Falmouth, for the most important assistance they rendered me in 

 procuring specimens of tlie sole in the younger stages of growth. I am still more 

 deeply indebted to Miss Annie Willis for the skill and care \vluch she devoted to the 

 water-colour drawings reproduced in Plates I to IX. The beauty, minuteness of detail, 

 and artistic finish of her work are evident enough in the lithographic copies, and I need 

 only add that the drawings were executed from the actual objects under my direct 

 supervision, and that I can answer for their perfect faithfulness. 



J. T. C. 



PLyMOUTH, 



March 13, 1890. 



