616 The Philippine Journal of Science 1922 
to his material from the Chinese prisoner, the Bureau of Science 
collection contains two specimens of Hymenolepis diminuta from 
rats in Manila. One of us (Schwartz) has recently found many 
adult specimens of Hymenolepis diminuta in the intestines of 
house rats. About one dozen field rats have been examined thus 
far, and no adult tape worms have been found in them. 
No case of infestation with Hymenolepis nana was found in 
the course of our examinations for evidence of parasitism. Gar- 
rison(4, 5) records 4 cases of infestation with this parasite. 
Rissler and Gomez(12) record 1 case of Hymenolepis infection, 
and Willets(16) records 5 cases; no specific determination is 
given in any of these papers. Willets(18) records 4 cases of 
Hymenolepis in nearly 8,000 stool examinations, and Garcia (19) 
reports 1 case in 1,600 examinations, but no specific deter- 
mination is given by these writers. 
INFESTATION WITH OTHER CESTODES 
In addition to the species of cestodes that have been men- 
tioned, Garrison(7) reports the presence of Davainea mada- 
gascariensis in an adult Filipino, the infestation having been 
discovered in the course of an autopsy. Mendoza-Guazon (10) 
records a case of Dipylidium caninum in a Filipino child, 8 
months old, likewise discovered during an autopsy. 
INFESTATION WITH TREMATODES 
One case of Clonorchis sinensis infection was found in a Chi- 
nese student, 21 years of age. The Chinaman came from Can- 
ton, and had been living in the'Islands several months when the 
infection was discovered. He showed no symptoms and did not 
_complain, even after being questioned. A blood examination 
was made and the following results were obtained: Hemoglobin, 
90; total erythrocytes, 4,680,000; eosinophilia, 14 per cent. 
Crowell and Hammack(3) in a report on intestinal parasites 
encountered in 500 autopsies record 2 cases of Clonorchis si- 
nensis infestation in Chinese. 
No additional records of Clonorchis infection in the Philippines 
have been found, and it may be concluded that this parasite has 
not yet been recorded from Filipinos. In view of the patho- 
genicity of this parasite, it is important that precautionary 
measures be taken to prevent the importation of Clonorchis in- 
fections to the Philippine Islands. It is uncertain, of course, 
that Clonorchis and other trematodes that occur in Chinese, 
Japanese, and other Orientals can be transmitted to new defini- 
