LARVAL TAPE WORM INFECTIONS. 



20' 



ant. If any quantity should escape into the peritoneal cavity at 

 operation, it may cause death. Hydatids develop very slowly, and the 

 duration of the disease is usually from 2 to 8 years. 



Sparganum mansoni. This is a larval bothriocephalid which is 



FIG. 64. Ova of intestinal parasites with measurements in mikrons. i Fasciola 

 hepatica (150x80); 2, Taenia saginata (25); 3, Ascaris lumbncoides (65x50); 

 4, Fasciolopsis buski (125x75); 5, Necator americanus (70x40); 6, Dibothrio- 

 cephalus latus (70x45); 7, Schistosomum haematobium (100x50); 8, Trichoceph- 

 alus trichiurus (55x25); 9, Strongyloides stercoralis (60x30); 10. Schistosomum 

 mansoni (110x60); n, Hymenolepis nana (56x53); 12, Echinorhynchus gigas 

 (100x80); 13 and 15, Oxyuris vermicularis (50x20); 14, Heterophyes heterophyes 

 (28x16); 16, Clonorchis endemicus (28x16). 



about 5 to 10 inches long and has been reported 10 times in Japan. It 

 has been found in various parts of the body. 



Sparganum prolifer. This has been reported from Japan as a 

 larval form in the subcutaneous tissue. Stiles has found these larval 

 forms in skin lesions in Florida. They show themselves as bizarre 

 grub-like forms. 



