II 



Pars IV. 



Publiihed November 5, 1897. 



Note on an Amphioxus obtained in Amakusa, Kyushyu...//. Nakagawa 125. 



On a New Species of Elasipoda from Misalti K. MitsuJcini 133. 



Preliminary Note on the Development of the Pronephros 



in Petromyzon S. Hatta 137. 



Sur une nouvelle espèce japonaise du genre Lucernaria. . .A. Oku 141. 



Sur une nouvelle espèce japonaise du genre Phoronis A. Oka 147. 



Miscellaneous Notes 149. 



The Occurrence of Sphrerothmïa bitentaculata, Ludwig in the Sagami Seas. — 



Contributions to the Morphology of Cyclostomata. I. On the Formation of 



the Heart in Petromyzon, by S. Hatta. — Zoological Society of Tokyo. 



Personal News 151. 



List of Publications received in exchange for the Anno- 



tationes until October, 1897, arranged alphabetically 



according to Authors or Societies 152. 



List of Names to which the Annotationes are regularly 



sent 152. 



List of Publications received by the Zoological Society 



of Tokyo before the issue of the Annotations 159. 



Erratum. 



In Mr. Ikeda's paper beginning at page 113 read lihacophorus instead of Baco- 



phonts. 



