On a New Human Tape-worm 

 (Bothriocephalus sp.). 



by 

 !. Ijima, Ph. D. 



lîigaknshi; Eigakiihakushi ; Prof, of Zoology, Sei. Coll., Imp. Univ., Tokyo. 



and. 



T. Kurimolo, 



Igakushi ; Prof, in the Medical Department, oth Higher Middle School, Nagasaki. 



With Plate XV TIL 



The hiiiiKiii tape-worm to be noticed in tliis paper is, as will be 

 borne out in the se(|ue], a very large Bothn'occpliaivs species furnished 

 with double genital ducts and openings in each proglottis. So far as 

 we are aware, any similarly characterized species of tliat genus has not 

 hitherto been included in the human ]>arasitic fjuma, though a few such 

 have long been known to occur in seals and certain fishes. We hold it 

 highly prob;il)le that tliis human Botlirioccpliahis is a near relative 

 of those already described from seals,' and possibly identical with one 

 of them. The supposition that the patient who discharged it, had 

 acquired his from a source similar to that which furnishes seals with 

 theirs, seems to be not improbable from the fact of his continual 

 residence near the sea-shore. 



The specific determination of this tape-worm, whether species 

 nomrum or not, we have preferred to leave to the discrimination of 



I I!i)t]ir. riiriiil)i/ix K'raMH', Hotlir. faaciatiin Krabbe and Bothr. tetrajyteriis y. Siehold, irom. 

 sevei'al species of I'lioca. 



