CONTENTS OF No. CXXVII— New Series. 



MEMOIRS: 



PAGE 



The Eenal Organs of Certain Decapod Crustacea. By W. F. R. 

 Weldon, M.A,, F.R.S., Jodrell Professor of Zoology and Com- 

 parative Anatomy in University College, London ; Fellow of St. 

 John's College, Cambridge. (With Plates XXI & XXII) . . 279 



The Nephridium of Lumbricus and its Blood Supply ; with Remarks 

 on the Nephridia in other Chaetopoda. By W. Blaxland Benham, 

 D.Sc. (Lond.), Anatomical Department, Oxford. (With Plates 

 XXIII-XXV) 293 



Notes on the Naidiform Oligochseta; containing a Description of 

 New Species of the Genera Pristina and Pterostylarides, and 

 Remarks upon Cephalization and Gemmation as Generic and Specific 

 Characters in the Group. By Alfred Gibbs Bourne, D.Sc. (Lond.), 

 C.M.Z.S., F.L.S., Fellow of University College, London; Fellow of 

 the Madras University ; Professor of Biology in the Presidency 

 College, Madras. (With Plates XXVI & XXVII) . . 335 



On Pelomyxa viridis, sp. n., and on the Vesicular^|Nature of 

 Protoplasm. By Alfred Gibbs Bourne, D.Sc. (Lond.), C.M.Z.S., 

 F.L.S., Fellow of University College, London ; Fellow of Madras 

 University ; Professor of Biology in the Presidency College, Madras. 

 (With Plate XXVIII) 357 



The Medusae ofMillepora murrayi and the Gonophores of Allo- 

 pora and Distichopora. By Sydney J. Hickson, M.A., D.Sc, 

 &c., Fellow of Downing College, Cambridge. (With Plates XXIX 

 and XXX) 375 



On a Red Pigment -forming Organism, B. corallinus. By 

 Charles Slater, M.B.(Cantab.) (With Plate XXXI) . . 409 



