3V 

 11 . 



Studies 



on the 



Ectopai*^sitic Trematodes of Japan, 



■\ by 



Seitaro Goto, Rigakushi, 



Seience College, Imperial University, Tokyo. 



I ; 



With Plates I-XXVII. 



Introduction. 



It was originally intended that I should publish these studies 

 jointly with Prof. Ijima ; but as he is engaged on another work, it 

 has become necessary for me to take the whole responsibility upon my- 

 self. The species on which these studies were made were for the most 

 part collected by myself from various parts'^ of Japan during the sum- 

 mers of 1889, '90, '91, and '92. The present part does not include the 

 Gijrodactylidce, the study of which I am still pi'csecuting ; and as this 

 will occupy me for some years longer, I have thought it advisable to 

 publish what is ready now, particularly as I have already been able to 

 make out the general anatomy of some of the Gyroclactylidce, and can 

 therefor^ take them into account in judging of the natural affinities 

 of the different species. 



The specimens collected by me were usually killed with hot 

 saturated solution of corrosive sublimate. This I'eagent gives, so far as 

 my experience goes, the best genera] result, fixing the worms usually 

 in ah outstretched condition and thus facilitating the process of sec- 



1). The collection was made at the following localities: Hakodate, Misaki, Tokyo, 

 Mitsugahama (in lyo), Tljina (the port of Hiroshima), Hagi, and Mogi (near Nagasaki). 



