Which of the following is not an intestinal parasite?

Wuchereria malayi is a parasitic nematode (roundworm) that causes a disease known as lymphatic filariasis. This disease is commonly referred to as elephantiasis due to the severe and disfiguring swelling of body parts, especially the limbs and genitalia, that can occur as a result of chronic infection. 

Adult worms reside in the lymphatic system.