ADDENDA. 



Page 7. 

 In the diagnosis of Cerutichihiis, read " Barbels two or none,'' in- 

 stead of '* Barbels two.''' 



Page 9. 



Add to the " Syncpsis of the genera," after Meda: — 



Pharyngeal teetli rudimenUl, replaced by a ridge of the bone ... 60 a. Graodus. 



Page 18. Catostomtis duquesnii. 

 We have received from Mr. Cope two small examples from the 

 Roanoke Eiver, "with the name of Itychostomvs cervinus (Cope); I 

 do not regard them as distinct from C. duquesnii, although they ap- 

 pear to have a smaller head, the length of which is one-fifth of the 

 total (without caudal). 



Page 55. Labio roMta. 



n. Thirtj-two inches long : skin. Calcutta. From Dr. Falconer's 

 Collection. 



Page 108. Barbus trispilus. 



Prof. Peters informs me that this fish is identical with Barbus 

 trimactdatus (p. 106), which was not apparent from the description 

 and figures. 



Page 116. Add a new species : — 



71 a. Barbus collingwoodii. 



D. 11. A. 8. L. lat. 30-32. L. transv. 6/4|. 



The osseous dorsal ray is strong, coarsely serrated behind, its stiff 



portion being two-thirds as long as the head. There are two or two 



and a half series of scales between the lateral line and the root of 



the ventral fin. Body strongly compressed, scarcely elevated, with 



the profile of the back slightly arched ; its depth is one-fourth of 



