PREFACE. iii 



species being attached ; alterations in the generic names and specific determinations by 

 the authors of the Monograph, subsequently to its completion, will be noticed, and also 

 whatever fresh information may be requisite about previously described species. 



It is hoped that after the description of all the new species has been finished there 

 will be an opportunity for noticing the geographical distribution of Corals, and the pecu- 

 liarities of the palseontological evidence offered by them. 



Note. — In writing this Supplement, or, as I have termed it, " Second Series," I am most anxious to 

 acknowledge that the foundation of all ray knowledge upon the anatomy, physiology, and classification of 

 the Zoantharia was derived from the writings of MM. Milne-Edwards and Jules Haime. It will be found 

 that the greater part of the following Introduction is taken, if not in exact words, still in ideas, from those 

 writings ; and if any palaeontologist or naturalist should think that I have neglected other works, it may, 

 perhaps, be an excuse, that it is right, in following such distinguished men as those who wrote the "First 

 Series," to carry on their train of thought, and to choose the results of their labours in preference to 

 those of others in compiling the " Second Series." 



