CONTENTS. 



Studies on tlie Ectoparasitic Trematodes of Japan. By Seitaro Goto, 



]'ii(i(il,-it.shi, Science Collège, Imperial University, Tokyo. fWith I'lutea 

 I-XXVIf.j 1 



On some new Japanese Land Leeches. By Asajies Oka, Ph., D., LU<i<ikit- 



/u/l,-iislu\ Seiouce College, Imperial Uuiversity, Tokyo. (With I'/otcs 



xxnfi-xxx.j '-^75 



Études sur la Fécondation et l'Embryogénie du Ginkgo Biloba, l^u- 



Sakuooe«) Hirase, Assistant au Collège des Sciences de FUniversitv 



i mpcriale de T. .ky. .. ( 1 1 'it h Plate, XXXT-XXXII.J 307 



Description of Opisthoteuthis depressa n. sp. By I. Ijima, l'h.. P., 

 Ili<luI,-iihn/.-it.shi, and S. Ikeda, Science College, Imperial University, 

 Tokyo. (With Plate XXXin.j 323 



On the so-called Excretory Organ of Fresh-water Polyzoa. By AsA.nnö 



Oka, Ph., J>., lU'jaL-ultakufihi, Science College, Imperial University, 

 Tokyo. n\iih r/ate XXXIV-XXXV.J 389 



On the Dendritic Appendage of the Urogenital Papilla of a Siluroid. 



By S. Hikota, ]!i;ial,-iisjn\ Zool. Inst., Science College, Imperial Univer- 

 sity, Tôkyn. (With I'late XXXVl.J 307 



PRINTED AT THE SEISHIBDNSHA, TOKYO. 



