SUPPLEMENT, PLATE X. 



Opaliniformis hemera. 



Figs. 1—4. — Cypiiolioceeas opalinifoehe, S. Buckman. 



Fig. 1.— Side view of a young speciineD. From the hard bed above the cephalopod bed, Haresfield Hill, Gloucester- 

 shire. (Page xlv.) 



Fig. 2. — Whorl-section. 



Fig. 3.— Radial line. 



Fig. 4. — Radial line of the specimen depicted in PL XIII, figs. 1, 2. 



Fig. 5.— Cypholioceeas eenotatum, 8. Buckman. 

 Fig. 5. — Radial lines of the specimen depicted in PI. XIV, tigs. 7, 8. (Page xlvi.) 



Scissi hemera. 

 Figs. 6 — 8. — Lioceeas opalinum (Beinecke). 

 Fig. 6. — Side view. Burton Bradstock. Collected by Mr. Darell Stephens, F.G.S. (Page xli.) 

 Fig. 7. — Whorl- section. 

 Fig. 8.— Suture-lines. 8 a, b.— Radial-lines. 



Fig. 9.— Lioceeas sp. 

 Fig. 9. — Radial line of the specimen depicted in PI. XIV, fig. 1. (Page xlii.) 



Fig. 10. — Lioceeas steiatum, S. Buckman. 

 Fig. 10. — Radial-line of the specimen shown in PI. XIII, fig. 6, as Lioceras opalinum, which should now be altered. 

 (Page xlii.) 



Aalensis hemera. 

 Figs. 11 — 13. — Pleydellia comata, 8. Buckman. 

 Fig. 11. — Side view. Burton Bradstock. 

 Fig. 12.— Whorl-section. 

 Fig. 13. — Suture-line. 13 a. Radial-line. 



Murchisonx hemera. 

 Figs. 14 — 16. — Manselia trichinia, •■?. Buckman. 

 Fig. 14. — Side view. Horn Park, near Beaminster. (Page lix.) 

 Fig. 15. — Whorl-section. 

 Fig. 16.— Suture-lines. 1G a, b. Radial-lines. 



Figs. 17 — 19. — Vaceeia Stephensi, 5. Buckman. 

 Fig. 17. — Side view. Bradford Abbas. Collected by Mr. Darell Stephens. 

 Fig. 18. — Front view. 

 Fig. 19.— Suture-lines. 19 a. — Radial-line. 



Bradfordensis hemera. 



Figs. 20— 22.— Paquieeia floccosa, S. Buckman. 

 Fig. 20. — Side view. " Stof'ord, Somerset." (Page lxviii.) 

 Fig. 21. — Whorl-section. 

 Fig. 22.— Suture-lines. 22 a.— Radial-line. 



Figs. 23— 28.— Cosmogyeia ? Maggsi, S. Buckman. 



Fig. 23.— Side view of a medium-sized specimen. Sherborne, Dorset. From the Collection of Mr. T. C. Maggs, 

 F.G.S. (Page liv.) The ribs in the umbilicus have been rather exaggerated. 



Fig. 24. — Whorl-section. 



Fig. 25. — Suture-lines (part of). 25 a. — Radial-lines. 



Fig. 20. — Side view of a young specimen. Probably from Sherborne. Collected by my father. 



Fig. 27. — Front view. 



Fig. 28.— Radial-line. 



Figs. 29 — 31. — Brasilina ceinalis, S. Buckman. 



Fig. 29. — Side view. Possibly from Halfway House, Dorset. From my father's Collection. 



Fig. 30.— Whorl-section. 



Fig. 31.— Radial-line. 



Figs. 32 — 34. — Cosmogyeia ? cierata, <S'. Buckman. 



Fig. 32.— Side view. From Halfway House, Dorset. From the Collection of Mr. F. Ellis, who kindly added it to my 

 cabinet . (Page liv.) 



Fig. 33.— Whorl-section. 



Fig. 34.— Suture-lines. 34 a.— Radial-line. 



Figs. 35 ~37.— Iucert(S sedis. 

 Fig. :;". Side view. Paving Bed, Bradford Ablms. Collected by Mr. D. Stephens. 

 I' ig. 36 Whoi 1-section. 

 Fig. 37.— Radial-line. 



All the specimens are in my Collection. 

 (Note. This seiies of platyleptogyral, striate Ammonites, which may be called Opalinoids, has been purposely 

 broughl together on one plate to show the resemblance in superficial appearance and the difference in details. At least 

 ■even different types of radial curve are shown, the extremes being Faquuria floccosa and Vacekia Stephensi.) 



