A 



AN ACCOUNT 



01-' TIIK 



DEEP-SEA MADREPORARIA 



COLLECTED BY THE 



ROYAL INDIAN MARINE SURVEY SHIP 



INYESTIGATOR 



BV 



A. ALCOCK, M.B., C.M.Z.S., F.G.S., 



INDIAN MEDICAL SERVICE, SUPERINTENDENT OK THE INDIAN MUSKUM AND PROFESSOR OF ZOOLOGY 

 IN THE MEDICAL COLLEGE CALCUTTA; FORMERLY NATURALIST TO THE MARINE SURVEY. 



CALCUTTA: 



PRINTED BY ORDER OF THE TRUSTEES OF THE INDIAN MUSEUM. 



1898. 



