I5i 



a cutting edge : of this genus eight species are known to Pro- 

 fessor Agassiz. 



In this enumeration of the genera of Cyprinid<B M. Agassiz limited 

 himself to the European forms, and scarcely adverted to any but 

 European species. 



In illustration of his views preparations were exhibited of the pha- 

 ryngeal teeth of Cyprims, Barbus, and other genera, from the col- 

 lection of Mr. Yarrell. 



