EXPLANATION OF PLATE XVIII. 



Fig. 1. — Antigonia rJiomboidea, sp. no v. Type, 115 mm. 

 long, from between Gabo Island and Cape Everard, 

 Victoria. 



Fig. '2. — Antigonia rubicunda, Ogilby. Type, 65 mm. long, 

 from north-east of North Reef, Queensland. 



