BULACEROS, NEW GENUS, AND TYTTHOSOCEROS, NEW GENUS, (PLATYHELMINTHES,POLYCLADIDA) FROM THE GREAT-BARRIER-REEF, AUSTRALIA AND PAPUA-NEW-GUINEA

Two new genera of pseudocerotid 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 i n having a single reproductive system, however, their overall morpholo gy resembles Pseudobiceros Faubel, 1984, which possesses paired male s ystems. Bulaceros, new genus can be distinguished from other pseudocer otid genera by its knobbed pseudotentacles, arrangement of the dorsal eyes and small, narrow penial stylet. Tytthosoceros, new genus, can be distinguished by its small ear-like pseudotentacles, arrangement of t he dorsal eyes, and short, wide penial stylet.