Trans. N.Z. Inst., Vol. XLIX. 



Plate XVIII. 



Goniastrea benhami Vaughan n. sp. 



Fig. 1. — Paratype ; natural size. 



Pigs. 2, 2a. — Holotype ; views, natural size, of two areas on the surface of the same 

 specimen to show variation in the characters of the collines and valleys. 



