SUPPLEMENT, PLATE III. 



Variabilis hemera. 

 Figs. 1 — 3. — Haugta patelliformis, 8. Buchnan. 



Fig. 1. — Side view of a portion of a wholly septate specimen. The details 

 have been supplemented from the other side. From the so-called " Upper Lias," 

 Shepton Beauchamp, Somerset. My Collection. (Page xxv.) 



Fig. 2. — Outline of the whorl-section. 



Fig. 3. — Suture-lines. 



Figs. 4 — 6. — Dbnckmannia torquata, 8. Buchnan. 



Fig. 4. — Side view of a wholly septate specimen, reduced to two-thirds of the 

 natural size. From the so-called " Upper Lias," Shepton Beauchamp, Somerset. 

 My Collection. (Page xix.) 



Fig. 5. — Outline of the whorl-section, natural size. 



Fig. 6. — Suture-lines and radial curves. 



Figs. 7 — 9. — Phymatoceras pauper, 8. Buckman. 



Fig. 7. — Side view of a somewhat poorly preserved shell. Details have been 

 supplemented from the other side. From the Cotteswold Sands, Coaley Wood 

 (Bed 13, section vi, p. 45). (Page xxxi.) 



Fig. 8. — Outline of the whorl-section, restored slightly. 



Fig. 9. — Radial curve. 



