219 
ON A SECOND AND THIRD CASE OF INFECTION 
WITH PLEROCERCOIDES PROLIFER IJIMA, 
FOUND IN JAPAN. 
By S. 0. YOSHIDA, 
Pathological Department of Osaka Medical Academy. 
(With Plate XVII.) 
This peculiar larval form of cestode, parasitic in man, was first 
discovered in a Japanese woman (Case I) on 9. vii. 1904, and described 
by Prof. Ijima in 1905. Subsequently it was found in an American 
by Dr H. Gates, of Manatee, Florida, in June, 1907, and described by 
Dr Charles Stiles, who had received Gates’ specimens for identifica¬ 
tion on 25. V. 1908. In the same year in which Gates’ case was 
recorded, we observed a second case (Case II) in Japan. In this case 
an enormous number of worms were present and they were generally 
larger than those from the former Japanese and American cases. 
Recently a patient suffering from the same form of cestode larva 
(Case III) was found in the Dermatological Institute of the Imperial 
University of Kyoto. 
The first and third Japanese cases are similar to one another in 
respect to the characters of worms, whereas there is shght difference 
in the symptomatology. But the second case is very different from 
both the foregoing cases. I shall here chiefiy describe the second 
Japanese case, which I have personally observed and examined, and 
shall add a brief account of the third case, which I have not studied 
personally, but regarding which I have received information from the 
physician who attended the patient. 
I am much indebted to Prof. Ijima, and to Dr I. Aoyama, Professor 
of the Medical College, Imperial University of Tokyo, as well as to his 
assistant, Mr Usui, for the help they have given me. The former has 
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