PLATE XXXIV. 



Clypetjs subulatus, Young and Bird. 

 From the Coralline Oolite. 



1 a. Cltpeus subulatus, Young and Bird, p. 38.2. Upper surface, natural size. 

 h. Under surface of the test c, slightly enlarged. 



c. Lateral view of another test, showing the border, natural size. 



d. Posterior view of the same test, showing the short anal valley and vent. 



e. Ambulacral area, poriferous zones, and inter-ambulacral plates, magnified thrice. 

 /. Tubercles and miliary granules from the upper surface, magnified. 



g. Apical disc, showing the madreporiform tubercle covering the other elements of the 

 disc. 



