Vlll PREFACE. 



defined as a genus having eight fins, the one 

 above the tail fleshy, and without spines. 



It is to be hoped M. Cuvier's ^new work 

 on fishes will supply accurate information on 

 this genus, which is still very imperfectly 

 known. 



Lay bach, Illyria y 

 Sept. 30. 1828. 



