PLATE XXXIV. 



Cassidulus intermedius Slocum (p. 79). 



Field Mus. P 10346, type. 

 Figure la. Upper surface of the test. 

 lb. Lower surface of the test, 

 lc. Posterior surface of the test. 

 Id. Lateral surface of the test. 



le. Portion of left anterior ambulacrum at base of petaloidal region, X 5. 

 If. Same, phylloidal portion, X 5. 



Cassidueus hemispiiericus Slocum (p. 80). 



Field Mus. P. 10347, type. 

 Figure 2a. Upper surface of the test. 

 2b. Lateral surface of the test. 

 2c. Portion of anterior ambulacrum at base of petaloidal region, X 5. 



Holaster simplex Shuniard (p. 85). 



U. S. Nat. Mus. 8382, figured specimen A. 



Figure 3a. Upper surface of the test. 

 3b. Lower surface of the test. 



