MAGILUS.— Plate II. 



septan ad octo valiiHs, distantibus, laqueato, latere 

 interno laminis latis, callosis rugato ; apicc brevu- 

 simo ; tuho infra obtuse carinato. 

 Thk kibbed Magilus. Sliell with a subglobose, 

 spirally distantly ribbed solid nucleus, then pro- 

 duced into a subtrigonal irregular tube, outer 

 side fluted with seven to eight strong, distant ribs ; 



inner side roughened with broad callous layers ; 

 ipex very short; tube obtusely carinuted below. 



The strongly ribbed shell in the collection of the 

 British Museum appears to be unique. 



