PLATE XL 



Murchisonce-zone> 



Fig. 1. LlOCEEAS BEADFOEDENSE, VCLT. GIGANTEUM, 8. BuckmCLU. 



Fig. 1. — Side view of a large adult specimen, showing the small deep umbilicus 

 and the smooth test when adult. The cross shows the position of the last 

 suture-line. From Beaminster, Dorset. My Collection. (Page 25.) 



Sowerbyi-zone (Concavum- 

 Figs. 2 — 7. — Lioceeas decipiens, var. intermedium, 8. Buchnan. 



Fig. 2. — Side view of a specimen with the whole test very well preserved. 

 Bradford Abbas. Collected by my father. (Page 33.) 



Fig. 3. — Front view of the same. No part of the body-chamber is present. 



Fig. 4. — Side view of the more compressed sub-variety A, showing absence 

 of ribs in the umbilicus. The test is extremely well preserved. Bradford Abbas. 

 My Collection. (Page 33.) 



Fig. 5. — Front view of the same specimen. 



Fig. 6. — Side view of the sub-variety B, showing more marked ribs on outer 

 area and larger umbilicus than that in Fig. 2. Bradford Abbas. My Collection. 

 (Page 33.) 



Fig. 7. — Front view of the same specimen. 



