SUPPLEMENT, PLATE XIV. 



Fig. 



1 — fi. Orthis alternately Sow. 1. After original figure, in Sil. System, pi. xix, fig. 6. 

 Caradoc, Cheney Longville, Shropshire. 2 — 6. Middle 

 Caradoc, Horderley, Woodwardian Museum, Cambridge. 



(P. 187.) 



7—16. „ retrorsisfria, M'Coy. A series of exteriors and interiors from the 

 Middle Caradoc. 7. Cerrig-y-Druidion. 8. Pentre 

 Cwmdu. 9. Hafod Evans. 10. Peny Gaer. 11. 

 Cerrig-y-Druidion. 12. Pentre Cwmdu. 13. Interior 

 and cast of interior of dorsal valve, Cerrig-y-Druidion. 

 14. Interior of ventral valve, same locality. 15,16. In- 

 ternal casts. All in the Woodwardian Museum, Cam- 

 bridge. (P. 185.) 



17 — 20. „ turgida, M'Coy. 17. Lower Caradoc, Llandeilo. 18. Llandeilo, 



Craighead, Girvan. 19, 19^!. Interior and internal 

 cast of dorsal valve, Middle Caradoc, Hills N. of Con- 

 way Palls. 20 and SOa. Internal cast and interior of 

 ventral valve, Lower Caradoc, Goldengrove, Llandeilo. 

 17, 19, and 20. M'Coy's types in the Woodwardian 

 Museum, Cambridge. 18. In the collection of Mrs. 

 R. Gray. (P. 187.) 



21 — 26. „ Carausii, Salter. From Lower Tremadoc, of Bone, Tyhen, Treiorwerth 



Anglesea. Collected and given to me by Prof. Mc. K. 

 Hughes. (P. 182.) 



