CONTENTS OF No. CXXXII — New Series. 



MEMOIRS: 



Primitive Segmentation of the Vertebrate Brain. By Bertram H. 

 Waters, A.B., E. M. Fellow in Biology. (With Plate XXVIII) . 



The Oscula and Anatomy of Leucosolenia clathrus, O. S. By 

 E. A. MiKCHiN, B.A., Assistant to the Linacre Professor of 

 Human and Comparative Anatomy, Oxford. (With Plate XXIX) . 



Researches into the Embryology of the Oligochseta. No. I. — On 

 Certain Points in the Development of Acanthodrilus multi- 

 porus. By Prank E. Beddard, M.A., F.U.S., Prosector of the 

 Zoological Society of London. (With Plates XXX and XXXI) 



On the Innervation of the Cerata of some Nudibranchiata. By W. A. 

 Herdman, D.Sc, F.R.S., Professor of Natural History ; and J. A. 

 Cltjbb, Assistant in the Zoological Laboratory, University College, 

 Liverpool. (With Plates XXXII, XXXIII, and XXXIV) . 



Notes on Elasmobranch Development. By Adam Sedgwick, M.A., 

 F.R.S., Fellow and Lecturer of Trinity College, Cambridge. (With 

 Plate XXXV) 



• On the Paired Nephridia of Prosobranchs, the Homologies of the only 

 remaining Nephridium of most Prosobranchs, and the Relations of 

 the Nephridia to the Gonad and Genital Duct. By Dr. R. v. 

 Erlanger. (With Plates XXXVI and XXXVII) 



page 



457 



477 



497 



541 



559 



587 



Title, Contents, and Index. 



