PLATE CIII. 



Diplothecanthus ROSACEUS (Lamarck) (p. 219). 

 U. S. Nat. Mus. 165693. 



Figure la. Lower surface of the test. 



lb. Posterior surface of the test. 



ScHIZASTER (?) STALDERI WeaVCT (p. 221). 

 Univ. California, type. 



Figure 2. Upper surface of the test. 

 332 



