﻿PLATE XLIV\ 



Dumortieria- or Moorei-beds. 



Figs. 1 — 3. — Dumortieria radians, var. exigua, S. Buckman. 



Fig. 1. — Side view of a specimen without test. Penn Wood. My Collection. 

 (Page 252.) 



Fig. 2. — Front view of the same. 

 Fig. 3. — Suture-line of the same. 



Opalinum-zone (Moorei-beds) . 

 Figs. 4 — 9. — Dumortieria Moorei (Lycett). 



Fig. 4. — Side view of a specimen with very fine striaa. Little of the very 

 thin test remains, but the test shows the fine striae, while the core has faint ribs. 

 From the shell-beds of the Yeovil Sands, Stoford, Somerset. My Collection. 

 (Page 255.) 



Fig. 5. — Front view of the same. 



Fig. 6. — Suture-line of the same specimen. 



Fig. 7. — Side view of a more involute form with the mouth-border. Buck- 

 holt Wood. My Collection. 



Fig. 8. — Front view of the same. 



Fig. 9. — Suture-lines taken from Lycett's original specimen, now preserved 

 in the Museum of Practical Geology. 



Figs. 10 — 12. — Dumortieria sobunddlata (Branco), var. 



Fig. 10. — Side view of a rather involute form with the test and the mouth- 

 border ; but the lateral lappet is incomplete. Frocester Hill (Coaley Peak). My 

 Collection. 



Fig. 11. — View of ventral area, showing the short ventral process and the 

 angle at which the ribs cross the carina, indicating that the specimen is a 

 Dumortieria. 



Fig. 12. — Suture-line of the same specimen. 



