PLATE II. 



Ziphius planus. 



Fig. 



1. Upper view of basal part of rostrum. 



Zijihiiis gihbm. 



2. Upper view of rostrum, wanting the extremity. 



2*. Outline of transverse section of rostrum at the part marked * in tig. 2. 



Fossils, from the Red Crag of Suffolk. In the British Museum. 



