SUPPLEMENT, PLATE V. 



Dumortierise hemera. 



Figs. 1, 2. — Cypholioceras ? vitiosum, 8. Buchnan, 



Fig. 1. — Portions of two specimens. These fragments are placed according to 

 the position they would apparently occupy in a complete shell, which is outlined 

 by dots. Standish Beacon. My Collection. (Page xliv.) 



Fig. 2. — View of the peripheral area. 2 a. — Outline of the whorl-section. 

 2 b. — Radial curve. 



Figs. 3, 4. — Cypholioceras ? pigrum, 8. Buchnan. 



Fig. 3. — Side view of a fragment. Standish Beacon. My Collection. (Page 

 xlv.) 



Fig. 4. — Outline of the whorl-section. 4 a. — Radial curve. 



Opaliniformis hemera. 

 Figs. 5, 6. — Cylicoceras undatum, 8. Buchnan. 



Fig. 5. — Side view of a somewhat ill-preserved specimen, the test mostly 

 replaced by a film of iron oxide. Ffaresfield Hill. My Collection. (Bed 15, 

 section v, p. 43.) (Page 1.) 



Fig. 6. — Outline of the whorl-section. 6 a. — Radial curve. 



Scissi hemera. 1 

 Figs. 7 — 11. — Lioueras uncinatum, 8. Buchnan. 



Fig. 7. — Side view of a very well-preserved specimen, with, most of its test 

 present. Burton Bradstock. Collected by Mr. Darell Stephens, F.Gr.S. Now 

 in my cabinet. (Page xxxvi.) 



Fig. 8. — View of whorl-section and peripheral area, from part of which the 

 test is absent. 



Fig. 9. — Suture-line. 9 a. — Radial carve. 



Fig. 10. — Side view of a young specimen broken up to furnish material for 

 figs. 11 — 11 g. Burton Bradstock. Mr. Darell Stephens. 



Fig. 11. — Side view of the first whorl broken out of the specimen shown in 

 fig. JO. 11 a. — Front view X 6. 11 b. — Peripheral view. 11 c. — Suture-line, 

 enlarged. 1 1 d.- — Side view of the third whorl embracing part of the second 

 whorl. 11 e. — Peripheral view showing incipient carina. 11 /. — Outline of the 

 sections of whorls 2, 3, 4, 5, to show the change in shape and in amount of 

 inclusion; the bottom whorl (2) fits to the end of 11 a. 11 g. — The whorls 2 

 and 3 of 11 /enlarged twice. 



1 The date in the case of these Burton Bradstock species is known by the matrix. 



