Two new genera ofpseudocerotid flatworms are described from the Great Barrier Reef, Australia and Madang, Papua New Guinea. Bulaceros, new genus, and Tytthosoceros, new genus, resemble Pseudoceros Lang, 1884 in having a single reproductive system, however, their overall morphology resembles Pseudobiceros Faubel, 1984, which possesses paired male systems. Bulaceros, new genus can be distinguished from other pseudocerotid genera by its knobbed pseudotentacles, arrangement of the dorsal eyes and small, narrow penial stylet. Tytthosoceros, new genus, can be distinguished by its small earlike pseudotentacles, arrangement of the dorsal eyes, and short, wide penial stylet.