PLATE LXV. 



ECHINANTHTJS GEORGIENSIS Twitcliell, 11. Sp. (p. 139). 



U. S. Nat. Mus. 165683b, 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. 



Cassidtjltjs californicus F. M. Anderson (p. 140). 

 U. S. Nat. Mus. 165664. 



Figure 2a. Upper surface of the test. 

 2b. Lower surface of the test. 



Cassidtjltjs (Rhynchopygtjs ?) holmesi Twitcliell, n. sp. (p. 140). 

 Am. Mus. Nat. Hist., type. 



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. 



Cassidtjltjs (Rhynchopygtjs) lyelli (.Conrad) (p. 141). 

 Boston Soc. Nat. Hist. 1552a. 



Figure 4a. Upper surface of the test. 

 4b. Lower surface of the test. 

 4c. Posterior surface of the test. 

 4d. Lateral surface of the test. 



Cassidtjltjs (Rhynchopygtjs) raveneli Twitcliell, n. sp. (p. 142). 



Am. Mus. Nat. Hist., specimen A, type. 



Figure 5a. Upper surface of the test. 

 5b . Lower surface of the test. 

 5c. Lateral surface of the test. 

 5d . Posterior surface of the test. 

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