VIII, B, 3 Crowell and Hammack: Intestinal Parasites 173 



Excretory vesicle. — Tubular; contains considerable, fine dark-brown, 

 granular pigment. 



Testes. — Two; posterior; branched with irregular swellings. 



Receptaculum seminis. — Very well developed; relatively large; imme- 

 diately anterior to anterior testis. 



Ovary. — Lobate; anterior to receptaculum seminis. 



Uterus. — Full of yellowish brown, operculated ova; between acetabulum 

 and ovary. 



Genital pore. — Mid-line; immediately anterior to acetabulum. 



Vesicula seminalis. — Present; well developed; long. 



Cirrus pouch. — Absent. 



Yolk glands. — In lateral fields; extend from about the level of the 

 acetabulum to about that of the ovary; several follicles are underdeveloped 

 in each set. 



Ova. — Small, yellowish brown, operculated; average size, 30 by 16 

 microns. 



SCHISTOSOMA 



One case * of schistosomiasis has been encountered in an 18- 

 year-old Filipino. The case showed the characteristic changes, 

 and the parasite has been identified as Schistosoma japonicum. 



SUMMARY 



In a series of 500 consecutive autopsies on people of all ages in 

 Manila : 



Ascaris lumbricoides occurred in 41.2 per cent, Trichuris 

 trichiura in 34.4 per cent, hookworm in 16.6 per cent, Txnia 

 saginata in 0.2 per cent, Cysticercus cellulosx in 0.2 per cent, 

 Oxyuris in 1 per cent, Clonorchis sinensis in 0.4 per cent. Schis- 

 tosoma japonicum in 0.2 per cent, malaria in 5 per cent, and 

 amoebic colitis in 5 per cent. 



The manifestations of ascariasis have been the presence of 

 Ascaris in the liver as the result of both ante-mortem and post- 

 mortem wanderings, and its possible action as the exciting 

 factor in one case of widespread haemorrhages. One clinical 

 case of Ascaris in the appendix has been encountered. Ascaris 

 has not been found less frequent in febrile than in other cases. 



Trichuriasis occurred in 33.9 per cent of the males and 35.4 

 per cent of the females ; 15.53 per cent of the cases under 15 years 

 of age and 40.1 per cent of the cases above that age harbored 

 Trichuris. Two clinical cases of appendicitis in which Trichuris 

 was found in the appendix have been encountered. 



One case has been described exemplifying the frequently 

 encountered haemorrhages in the submucosa of the intestine 

 associated with the presence of the hookworm. 



* This case will be reported in full by Dr. V. L. Andrews. 



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