PLATE XVII. 



Concavum-beds. 

 Figs. 1 — 5. — Hyperlioceras discites (Waagen). 



Fig. 1. — Side view of a smooth example (var. a). All the test present and 

 well-preserved, but no part of the body-chamber. Bradford Abbas, Dorset. My 

 Collection. (Page 94.) 



Fig. 2. — Front view of the same specimen. 



Fig. 3. — Side view of another specimen showing the termination to the mouth 

 border. Bradford Abbas, Dorset. Collected by my father. 



Fig. 4. — Front view (in outline) of the same specimen. 



Fig. 5. — Side view of another specimen (var. £). No part of the body- 

 chamber is present. Bradford Abbas, Dorset. Collected by my father. 



Figs. 6, 7. — Hyperlioceras Desori (Moescli). 



Fig. 6. — Side view of a specimen with small portion of the test preserved. 

 Bradford Abbas, Dorset. My Collection. (Page 97.) 



Fig. 7. — Front view of the same showing the sub-triangular aperture, and over- 

 hanging inner margin. 



