CONTENTS. 



I. — Report on the Keratosa collected by H.M.S. Challenger, during the years 



1873-1876. 



By N. PoLEJAEFF, M.A., of the University of Odessa. 



(Recewed 16th April 1884.) 



II. — Report on the Crinoidea collected during the Voyage of H.M.S. Challenger, 

 during the years 1873-1876. — The Stalked Crinoids. 



By P. Herbert Carpenter, D.Sc, Assistant Master at Eton College. 



{First instalment of Manuscript received 18th March 1884 ; the last 13th December 1884.) 



III. — Report on the Isopoda collected by H.M.S. Challenger, during the years 



1873-1876.— The Genus Serolis. 



By Frank Evers Beddard, M.A. (Oxon), F.R.S.E., F.R.M.S., F.Z.S., M.B.O.U., 

 Prosector to the Zoological Society of London. 



(Received 6th September 1884.) 



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