CONTENTS OF No. 170 -New Series. 



MEMOIRS : 



Oil tlie ReaclJoii ol Dapiuiia iiiat^ua (Siraus) to ceilaiu Ciiaiii^cs in 

 its Euviioiimeiii. By Ernest Warken, D.Sc, University College, 

 London 199 



A Revision ol the Genus Steganoi)orella. By Sidney F. Harmer, 

 Sc.D., F.ll.S., Fellow of Kin£,''s Collece, Cambridire ; Superintendent 

 of Uie University Museum of Zoology. (Willi Plates 12 and 13) . 225 



On a New Histriobdellid. By William A. Haswell, M.A., D.Sc, 

 F.R.S., Cliallis Professor of Biology, University uf Sydney. (With 

 Plates U and 15) 299 



On Spoiigioj)orphyrin : the rigmei.t of Suberites Wilsoni. By 

 C. A. MacMunn, M.A., M.D. (With Piute 16) .... 337 



Further Remarks on the Development of Amphioxiis. By E. W. 

 MacBride, M.A., D.Sc.(Lond.), Professor of Zoology in McGill 

 University, Montreal. (With Plate 17) 351 



Quelques Observations sur les Onychophores (Peripatus) de la Collec- 

 tion du Musee Britannique. Par M. E. L. Bouvier, Professeur au 

 Museum d'histoiie naturelle de Paris 367 



On the Diplochoida. Ill, The Early Development and Anatomy of 

 Phoronis Buskii, Mel, By Arthur T. Masterman, M.A. 

 (Cantab.), D,Sc,(Lond. and St, A.), Lecturer on Zoology in the 

 New Medical School, Edinburgh. (With Plates 18— 21) . . 375 



