SUPPLEMENT, PLATE XL. 



DEVONIAN. 



Fig. 



1 — 8. Orthis Monnieri, Rouault. 1 a. Exterior of ventral valve, enlarged. 



1 b. Interior of ventral valve ; and 2, 3, exterior of 

 dorsal and ventral valves, enlarged. 4 a. Internal cast 

 of dorsal valve. 4 b. Interior of same valve, enlarged. 

 Coll. of Rev. H. Winwood. 5. Exterior of young 

 specimens. Museum of Practical Geology. 6. In- 

 ternal cast of ventral valve. 6 a. Interior of valve, 

 enlarged. Collection of Mr. Vicary. 7. Profile view, 

 enlarged. 8. Internal cast of both valves, nat. size. 

 All from Budleigh-Salterton. (P. 345.) 



9, 10. Crania transversa, Dav. Budleigh-Salterton. Museum of Mr. Vicary. (P. 



352.) 



11 — 13. Discina Vicaryi, Dav. 11, 12. Budleigh-Salterton. 13. Chisel Bank. All 



from Collection of Mr. Vicary. (P. 353.) 



14, 15. „ incerta, Dav. Budleigh-Salterton. Collection of Mr. Vicary. 



(P. 353.) 



SILURIAN. 



16 — 20. Lingula Lesueuri, Rouault. 16. Specimen with peduncle. Collection of Mr. 



Vicary. 17. Portion of a large specimen. Wood- 

 wardian Museum, Cambridge. 18. A very elongated 

 example. Collection of Rev. H. Winwood. All Bud- 

 leigh-Salterton. 19. From the Drift, Ladypool Lane, 

 near Birmingham. Woodwardian Museum, Cambridge. 

 20. A group of small specimens. Budleigh Salterton. 

 Albert Memorial Museum, Exeter. (P. 361.) 



21. „ Ilaivkei, Rouault. Showing muscular impressions, from a quartzite 



pebble. Drift, Woodbury Common. Albert Memorial 

 Museum, Exeter. (P. 363.) 



22, 23. Dinobolus Brimonti, Rouault, sp. Budleigh-Salterton. (P. 365.) 



24. Lingula ? Salteri, Dav. Budleigh-Salterton. (P. 364.) 



25, 26. „ Morierei, Tromelin. Budleigh-Salterton. Collection of Mr. Vicary. 



26. Shows the muscular impressions. (P. 354.) 



27. ,, ? Referred by Mr. Etheridge to Z. crumena, but may be 



a malformation of Z. Haiokei. Budleigh-Salterton. 

 Museum of Practical Geology. (P. 363.) 



28. ? Species not determinable. Budleigh-Salterton. Collec- 



tion of Mr. Vicary. 



29 — 31. Nucleospira Vicaryi, Dav. 29. Exterior of shell; internal casts of both 



valves, nat. size. 31. Internal calyx of ventral valve. 

 31 a. Interior of same valve. 31 b. Cardinal process 

 seen in profile. Budleigh-Salterton. Collection of 

 Mr. Vicary. (P. 355.) 



