This is the male of Schistosoma mansoni with the stouter body, gynecophric canal (more apparent to the right), and the two anterior suckers. The oral sucker is around the mouth and the acetabulum is a short distance posterior to the oral. Note that slightly above and to the right of the acetabulum are the linear row of 7 testes.  100x

anterior view of the male S. mansoni with the oral sucker to extreme left, acetabulum in the foreground and the linear row of testes to the right.  The adults live in the posterior mesenteric veins in humans, delivering egg capsules which burrow through the vein wall into the large intestine with damage to vein and intestinal wall occurring.  400x