Myliobatidæ.

The disk is very broad in consequence of the great development of the pectoral fins, which, however, leave the sides of the head free, and reappear at the extremity of the snout as a pair of detached (cephalic) fins.

Rhinoptera polyodon (?). Australian coast.

Ceratoptera Alfredi. Port Jackson. "Sea Devil."

The original specimen, 15 feet wide, is in the Australian Museum.