From the I'roceedings of the Boston Society of Natural History, 

 Vol. XX, May 15, 1878. 



Notes on xhe Coral Reefs of the Island of Itapauica, 

 Bahia, ANt) of Parahyba do Norte. By Richard Rathbun. 



In the American Naturalist for July, 187G, I gave a short descrip- 

 tion of the coral reef skirting the outer shore of th6 island of Itapa- 

 rica, in the bay of Bahia, Brazil. From a further examination of 

 the reef and a study of the specimens procured from it, I am able to 

 add a few items of interest to those previously given. I also wish to 

 call attention to the existence of another reef, similar to that of 

 Itaparica, to the south of the entrance to the Rio Parahyba do Norte. 

 It was explored by Mr. John Branner of the Geological Commis- 

 sion. In shape and structure, as well as in the paucity of coral life 

 upon it, this last agrees very closely witli the Itaparica reef. It fol- 

 lows the trend of the shore, at a short distance from it, and between 



