SUPPLEMENT, PLATE I. 



Lilli hemera. , 



Figs. 1 — 6. — Lillia Lilli, Eauer. 



Fig. 1. — Side view of a typical but immature specimen without test. The + shows the position of the last septum, 

 and the O where the partition-band terminated, as indicated by the shape of the periphery. Shepton Beauchamp, 

 Somerset. My Collection. (Page xiv.) 



Fig. 2. — A portion of the periphery taken at the place marked a. Attached to the lower part may be seen a piece of 

 the infilling of the septicarina : this infilling has been shifted, and has become cemented again during fossilisation. 



Fig. 3. — Outline of the whorl at the commencement of the body-chamber. What appears as carina is only the 

 infilling. 



Fig. 4. — Portions of three consecutive septa, taken at a diameter, for the middle one, of about 40 mm., showing 

 the long L and also the very small I on the upper edge of the inner margin — the dotted line. 



Fig. 5. — Radial curves. 



Fig. 6. — Portion of the body-chamber of a large adult (senile ?) specimen, which probably measured over 300 mm. 

 in diameter. It is not certain that it is L. Lilli, but it belongs to a closely related fossil. It probably measured 68 mm. 

 in whorl-thickness, but the other side is incomplete. Found loose at Trent, Somerset; but its horizon is unmis- 

 takable, as embedded in the back of it are portions of two examples of Hildoceras bifrons. 



Figs. 7 — 10. — Denckmannia tttmefacta, S. Buckman. 



Fig. 7. — Side view, showing the large, coarse ribs. The specimen possesses the test, but is not altogether in good 

 condition ; the centre of the umbilicus is wanting. From just above Hildoceras bifrons. Shepton Beauchamp, Somerset. 

 My Collection. (Page xix.) 



Fig. 8. — Peripheral view. 



Fig. 9. — Outline of the whorl-section. 



Fig. 10. — Portions of two septa. The superior lateral lobe of one and the siphonal lobe of its successor are given in 

 position to illustrate the size of the loculus. The superior lateral lobe is apparently tridactyloid, with very isosceloid 

 terminal lobule, and much abbreviated inner lobule. 



Dumortieria hemera, probably. 

 Figs. 11 — 15. — Chaeteonia binodata, S. Buckman. 



Fig. 11. — Side view of a poorly preserved specimen destitute of test. Purchased from the Collection of the late 

 Dr. Wright, F.R.S. It is labelled " Frocester Hill." It is certainly from the Cephalopod-bed ; and by the matrix 

 probably from the Dumortieria-bed. Now in my Cabinet. (Page xvi.) 



Fig. 12. — Front view of the same specimen to show the presence of rudimentary nodi towards the outer ends of 

 the costse. These pimples are situated on the edge of the periphery, between the siphonal and superior lateral lobes. 

 The septicarina of this specimen is lost, but there remains a distinct imprint of the partition band. 



Fig. 12 a. — Part of the periphery enlarged twice, to show the small nodi and the imprint of the partition band. 



Fig. 13. — Portions of two suture-lines at 5fi mm. diameter. 



Fiar. 14. — The same at 67 mm. diameter. The superior lateral lobe is not dactyloid, but may be said to be somewhat 

 claviform. 



Fig. 15. — Radial curves of the same specimen. 



