PLATE LXXXIV. 



Ophioderma (?) sp. (p. 178). 



Johns Hopkins Univ. T 1000. 

 Figure 1. Fragment of arms. 



Amphiijra sanct.ecrucis Arnold (p. 178). 



Stanford Univ. 1078, type. 

 Figure 2. Cast of dorsal surface, X 3. 



Amphiura sanct^crucis Arnold (p. 178). 



U. S. Nat. Mus. 165431, type. 

 Figure 3. Cast of ventral surface. 



Ccelopleurus improcerus (Conrad) (p. 180). 



U. S. Nat. Mus. 166487. 

 Figure 4a. Upper surface of the test. 

 4b. Lower surface of the test. 

 4c. Lateral surface of the test. 



Ccelopleurus sloaxi Clark, n. sp. (p. 181). 



U. S. Nat. Mus. 166488, type. 

 Figure 5a. Upper surface of the test. 

 5b. Lateral surface of the test. 



Psammechinus philanthropus (Conrad) (p. 181). 

 Johns Hopkins Univ. T 1001. 



Figure 6a. Upper surface of the test. 

 6b. Lower surface of the test. 

 6c. Lateral surface of the test. 



