



PEEFACE, 



THE object of the present Catalogue is to give a List of all the 

 genera and species of the family of the Stony Corals, or Lithophytes, 

 known to exist in the collections of Europe and America. The 

 letters B.M. after the specific names denote those species that are 

 now contained in the Collection ; and the absence of those letters 

 indicates the species which are desiderata, and therefore desirable to 

 be procured for the collection. 



This is the second part of the ' Catalogue of Polypes and their 

 Corals.' The other Parts are in preparation. 



J. E. GRAY. 



British Museum, 

 July 8, 1870. 



182110 



