151 



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

 fessor Agassiz. 



In this enumeration of the genera of Cyprinida 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 Cyprinus, Barbus, and other genera, from the col- 

 lection of Mr. Yarrell. 



