SUPPLEMENT, PLATE XVI. 



Discitss h era era. 

 Figs. 1 — 3. — Depaoceras pallax, 8. Buchnan. 



Fig. 1. — Side view. "Fossil Bed," Bradford Abbas, Dorset. (Page lxxviii.) 



Fig. 2. — Front view. 



Fig. 3. — Suture-line. 3 a. Radial-line. 



(See PI. XIV, figs. 10, 11, " Lioceras fallax.") 



Figs. 4 — 6. — Hyperlioceras curvicostatum, 8. Buchnan. 



Fig. 4. — Side view of a wholly septate specimen almost without test. Brad- 

 ford Abbas, " Fossil Bed." Collection of Mr. D. Stephens, F.G.S. (Page cxxiv.) 

 Fig. 5. — Front view. The carina is not drawn conspicuous enough. 

 Fig. 6. — Suture-lines. 6 a. Radial-line. 



Figs. 7 — 9. — Deltotoceras uunbatum, 8. Buchnan. 



Fig. 7. — Side view. Bradford Abbas, " Fossil Bed." Collection of Mr. D. 

 Stephens. (Page cxix.) 



Fig. 8. — Whorl-sections. 8 a. Section of the septicarina. 

 Fisf. 9. — Suture-lines. 9 a. Radial-line. 



