70 TROPICAL MEDICINE AND HYGIENE 



and the anus sub-terminal. The tail end is pointed. The 

 female genital orifice is in the posterior third of the body. 

 In the uterus a few eggs only are found, and as these are 



FlG. 39. Strongyloides intestinalis. a, mature parasitic form ; b, rhab- 

 ditiform larva ; c and d, sexually mature free-living female and male ; 

 e, filariform larva. 



0*05 mm. in length and 0^03 mm. in diameter, they appear 

 to completely occupy the central part of the body 

 (fig- 39). 



