EDITORIAL NOTE. 



The Preface to the Account of the Deej) Sea Madreporaria collected by the 

 Royal Indian Marine Survey Ship ' Investigator,' recently published by order of 

 the Trustees of the Indian Museum, explains briefly how the ' Investigator ' 

 collections came to be made and to be deposited in the Museum. 



I have here only to thank Dr. Koehler, in behalf of the Trustees of the 

 Museum and of the past and present Naturalists of the Ship, for his kindness in 

 naming and describing the Ophiuroidea collected up to the end of the year 1895. 



The present Fasciculus relates only to the Deep-sea Ophiuroidea, and Dr. 

 Kcehler desires it to be known that he himself has not corrected the proofs either 

 of the text or plates. 



A. Alcock, Major, I.M.S., 



Siiperintendent of the Indian Museum. 



