PLATE LXXXI. 



Echinolampas aldrichi Twitchell, 11. sp. (p. 173). 



Johns Hopkins Univ. T 1099, specimen A, type. 



Figure la. Upper surface of the test, 

 lb. Lower surface of the test, 

 lc. Lateral surface of the test. 

 Id. Posterior surface of the test. 



Echinolampas aldrichi Twitchell, n. sp. (p. 173). 



Johns Hopkins Univ. T 1099. 

 Figure 2. Part of floscelle, X 4^. 



Agassizia conradi (Bouve) (p. 174). 



U. S. Nat. Mus. 164744. 

 Figure 3a. Upper surface of the test. 

 3b. Lower surface of the test. 

 3c. Lateral surface of the test. 

 3d. Posterior surface of the test. 

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