36 Bulletin 26 130 



Explanation of 



Plate 9 (33) 



Hemiaster calvini, Clark, Page 18 (102) 



Fig. i. Upper surface of the test, Xi. 3. 



2. Lower surface of the test, X1.3. 



3. Posterior surface of the test, X 1.3. 

 Echinobrissus angustatus Clark. 



Fig. 4. Lower surface of the test, X7. 



