SUPPLEMENT, PLATE XXII. 



Fro. 



1,2. WaId/ieimiaornif/tocep/iala,Sow. 1. Erom the original example. ' Min. Con.,' 



Tab. 101, fig. 1. Cornbrash of Chatley. British 

 Museum. 2. Fuller's Earth, near Bath. (Pp.165 

 and 167.) 



3 — 5. „ lampas, Sow. Supra- Coralline Bed, Abbotsbury, Dorsetshire. 



Collection of Mr. Walker. 5. A specimen showing 

 the long loop. (P. 169.) 



6. „ „ (Internal cast.) From the original example figured 



by Sowerby ('Min. Con.,' Tab. 101, fig. 3) from 

 near Lyme Regis, Dorsetshire. British Museum. 

 (P. 169.) 



7, S. „ umbonetta, Lam. Kelloway Rock, Scarborough. Collection of 



Mr. J. F. Walker. (P. 168.) 

 9. „ Cadomensis, E. Desl. Inferior Oolite, Charlcomb, near Bath. 



Collection of author. (P. 170.) 



10. „ obovata, Sow., var. perobovata, Walker. Cornbrash, Yaxley, near 



Peterborough. Collection of Mr. J. F. Walker. 

 (P. 171.) 



11. „ „ A specimen from same locality, showing a tendency 



to the formation of folds close to its frontal 

 margin. Collection of author. (P. 171.) 



12. „ „ var. Siddingtonensis, Walker. Cornbrash, Yaxley, 



near Peterborough. (P. 172.) 



13. 14. „ „ var. Siddingtonensis. Cornbrash, Siddington, near 



Cirencester. (P. 172.) 

 15, 16. „ „ var. sub-obovata, Walker. Cornbrash, Yaxley, near 



Peterborough. (P. 172.) 

 17 — 19. „ „ var. Stiltonensis, Walker. Cornbrash, Stilton, near 



Peterborough. Collection of Mr. Walker. (P. 172.) 



20. „ „ var. Stiltonensis. Cornbrash, Scarborough. Leckenby 



Collection, Woodwardian Museum, Cambridge. 

 (P. 172.) 



21. „ digona, Sow. A specimen showing the loop. Great Oolite, Bath. 



Collection of author. (P. 173.) 



22. „ „ A specimen showing spines rising from the outer 



surface of the principal lamellae or stems of the 

 loop. 22 a. A portion of the lamella enlarged. 

 Great Oolite, Bath. Collection of author. 

 (P. 173.) 



23. „ bucculenta, Sow. Lower Calcareous Grit, Malton, Yorkshire. 



Leckenby Collection, Woodwardian Museum, 

 Cambridge. (P. 173.) 



