EXPLANATION OF PLATE IX. 



Fig. 1. — Mediaster australiensis, sp. no v. Photouraph of the 

 holotype from the east coast of Flinders Island, Bass 

 Strait, 40 fathoms. Abactinal view. Five-eighths 

 natural size. 



Fig. 2. — Actinal view of same specimen as Fig. L 



