Trematodes from Red Sea fishes: Proneohelicometra aegyptensis gen. nov., sp. nov. (Opecoelidae Ozaki, 1925) and Neohypocreadium gibsoni sp. nov. (Lepocreadiidae Odhner, 1905). Acta Parasitologica, 51(4), December 2006: 249-254. 252 [Zoological Record Volume 143]