Scutogyrus gen. n. (Monogenea: Ancyrocephalidae) for Cichlidogyrus longicornis minus Dossou, 1982, C. l. longicornis, and C. l. gravivaginus Paperna and Thurston, 1969, with description of three new species parasitic on African cichlids. Journal of the Helminthological Society of Washington, 62(2), July 1995: 157-173. 158 [Zoological Record Volume 135]