PLATE XXXII. 



Cassidulus suiiCONicus Clark (page 71). 



Fig. la. Upper surface of tlie test. 

 1/*. Lower surface of the test. 

 Ic. Lateral view of the same. 

 Id. Posterior view of the same. 

 le. An aiiibnlacral area, enlarged. 



1/. Several plates of the petaloidal jfortiou, highly luaguitiert. 

 Ig. Ditto, oral portion. 



Ih. Diagram showing the arrangement of the plates around peristomial opening. 

 1(. luterambulacral jilate, much enlarged. 

 lA. Apical disk, much enlarged. 

 168 



