CONTENTS. 



J- I. — Report on the Anatomy of the Sphenisgid.e collected by H.M.S. Challensei:!, 



during the years 1873-1876. 



By MoRPJSON Watsox, M.D., F.R.S.E., Professor of Anatomy in the Owens College, 



Manchester. 



{Received November 15, 1882.) 



, II. — Report on the Pelagic Hemiptera collected by H.M.S. Challenger, during the 



years 1873-1876. 



By F. BucHA2fAN White, M.D., F.L.S. 



{Received February 26, 1883.) 



-+- III. — Report on the Hydroida dredged by H.M.S. Challenger, during the years 



1 873-1876. — First Part— Plumularid.e. 



By a. J. Allman, LL.D., F.R.SS. L. and E., M.R.I.A., F.P.L.S., &c. 



{Received Jumtary 6, 1883.) 



-| IV. — Report on the Specimens of the Genus Orbitolites collected by H.M.S. 



Challenger, during the years 1873-1876. 



By W. B. Carpenter, C.B., M.D., LL.D., F.R.S., F.L.S., F.G.S., Corresp. .Memb. Inst. 



France, &c. 



{Received May 14, 1883.) /v* ' / 



79G80 



