P) IT] 18 



Fig. 1. Ampherasler marianus, station 2896, enlarged slights less than two times. 

 2. U>actinal \\:ill of a ray flattened to show plates. 

 3 A mpherasler marianus, station 4427, ■ slightly less than 2. 

 I Vmpherasler marianus, station 1407, actinal surface, slightlj less than 2. 

 .-,'. Ampheraste, atactus, type, station 1241, 1? 5a, 56. Same specimen, detached rays 

 I':,. l99 



