PLATE LX. 



Scutella tuomeyi Twitchell, 11. sp. (p. 125). 

 U. S. Nat. Mus. 137970, 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. 



MORTONELLA QUINQUEFAEIA (Say) (p. 128). 

 U. S. Nat. Mus. 9500, specimen A. 



Figure 2a. Upper surface of the test. 

 2b. Lower surface of the test. 

 2c. Posterior surface of the test. 

 2d. Lateral surface of the test. 

 2e. Part of one of the ambulacra, X 4. 

 2f. Apical system, X 6. 



