CONTENTS. 



PART V.— October, 1877. 



J XI. On Steere's Sponge, a new Genus of the BZexactinellid Group of the Spongida. 

 By James Murie, M.D., F.L.S., F.G.S., 8fc. (Plates XXXVI. & XXXVII.) 



page 219 



. XII. Notes upon the Oxystomatous Crustacea. By Edward J. Miers, F.L.S., F.Z.S., 

 Assistant in the Zoological Department, British Museum. (Plates XXXVIII. 

 -XL.) 235 



i XIII. On the Domestic Pig of Prehistoric Times in Britain, and on the mutual Rela- 

 tions of this variety of Pig and Sus scrofa ferus, Sus cristatus, Sus andaman- 

 ensis, and Sus barbatus. By George Rolleston, M.D., F.R.S., F.L.S., 

 Linacre Professor of Anatomy and Physiology, Oxford. (Plates XLL- 

 XLIII.) 251 



i XIV. On two new Forms of Deep-sea Ascidians, obtained during the Voyage of ff.M.S. 

 1 Challenger.'' By H. N. Moselet, M.A., F.R.S., Fellow of Exeter College, 

 Oxford. {Communicated by Dr. J. Murie, F.L.S.) (Plate XLIV.) . . 287 



- XV. On new Forms of Actiniaria dredged in the Deep Sea ; with a Description of 

 certain Pelagic Surface-swimming species. By H. N. Moselet, M.A., F.R.S., 

 Fellow of Fxeter College, Oxford, late Naturalist on board M.M.S. ' Chal- 

 lenger.' (Communicated by Dr. J. Murie, F.L.S.) (Plate XLV.) . . 295 



