110 GENUS CATOSTOMUS. [October, 



recorded by La Cepede. On a review of the extensive and 

 valuable work of this celebrated author, to whom science 

 is so much indebted, I have found that I was in error, and 

 I hasten to publish my acknowledgment. The descrip- 

 tion of the C. sucetta was taken from the manuscripts o 

 Monsieur Bosc, formerly Consul of France at Charleston, 

 South Carolina. This species is said to be very common 

 in the rivers of South Carolina; it seldom arrives to the 

 length of four decimetres^ or about two feet; and it is not 

 an esteemed food. 



ADDENDA. 



In the cabinet of the \cademy of Natural Sciences, 

 there is a specimen of Catostomus which approaches in 

 its form to the C Cyprinus of the Chesapeake. It dif- 

 fers from the last mentioned in its gill-coversy which are 

 stronger; in its back, which is a little less elevated; in its 

 dorsal fin, the two first rays of which are longer than the 

 total length of the fin, and extend as far as the base of the 

 caudal fin. 



This individual resembles in its other parts, and also in 

 the number of the rays of its fins, the Chesapeake species. 

 According to the observation of Mr, T. Say, who disco- 

 vered this fish in the Ohio, and who examined and pre- 

 pared two recent specimens, the colour was the same as 

 that of the C. Cyprinus. 



The difference, noted above, which exists between 

 the Catostomi in question, does not appear sufficient to 

 authorize me to record them as distinct species, though 1 

 must admit that the uncommon length of the first rays of 

 the dorsal fin, of the Ohio fish, if universal, would sug- 

 gest a specific discrimination. They certainly have a 



