PLATE XLVII. 

 Hemiasteb dalli Clark (p. 90). 



U. S. Nat. Mus. 19114, type. 

 Figure la. Upper surface of the test. 



lb. Upper surface of the test restored. 



lc. Lower surface of the test. 



Id. Lateral surface of the test. 



le. Posterior surface of the test. 



If. Several plates from the petaloidal portion of the left anterolateral ambulacrum, X 5. 



Hemiasteb calvini Clark (p. 90). 



U. S. Nat. Mus. 12241, type. 

 Figure 2a. Upper surface of the test. 

 2b. Lower surface of the test. 

 2c. Lateral view of the test. 

 2d. Posterior view of the test. 



2e. Several plates from the petaloidal region of the right posterolateral ambulacrum, X 5. 

 2f. Same, lower portion of petaloidal region, X 5. 

 2g. Several plates from anterior ambulacrum, X 5. 

 2h. Interambulacral plate, X 3. 

 2i. Apical system, X 5. 

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