CONTENTS OF No. 163.-New Series. 



MEMOIRS: 



Tlie Blood of Magelona. By W. Blaxland Benham, D.Sc.Lond., 

 Hon.M.A.Oxon., Aldrichian Demonstrator in Comparative Anatomy 

 in the University of Oxford. (With Plate 1) . . . 1 



Fission in Nemertines. By W. Blaxland Benham, D.Sc.Lond., 

 Hon.M.A.Oxon., Aldrichian Demonstrator in Comparative Anatomy 

 in the University of Oxford. (With Plates 2 and 3) . 19 



Studies on the Nervous System of Crustacea. By Edgar J. Allen, 

 B.Sc, Director of tlie Plymouth Laboratory of the Marine Biolo- 

 gical Association. (With Plate 4) . . . . ,83 



Notes on 01igoch«etes, with the Description of a New Species. By 

 Edwin S. Goodrich, B.A., Assistant to the Linacre Professor of 

 Comparative Anatomy, Oxford. (With Plates 5 and 6) . .51 



On the Development of Lichenopora verrucaria, Fabr. By 

 Sidney F. Harmer, M.A., B.Sc, Fellow of King's College, Cam- 

 bridge; Superintendent of the University Museum of Zoology. 

 (With Plates 7—10, and two figures in text) . . . .71 



