Those Pages 



and the Discoveries which they contaii 



in one of the principal Branches 



of Natural History, 



arc respectfully Inscribed 



by the Author; 



To his fellow-labourers in the same field of Science: 



Prof. Samuel L. Mitciiill, M. D. 



who has described the Atlantic Fishes of New York, 



and to 



C. A. Le Sueur, 

 who was the first to explore the Ichthyology of the 



Great American Lftlres, Sec. 



In Token 



of Friendship, Respect, and Congratulation. 



♦j- , v 



V" 



