PLATE IX. 



(Carboniferous Species.) 



1. Spirifera cuspidata (?), Martin. Internal cast of a ventral valve. This specimen 



denotes tlie existence of a tubular perforation (/) in the 

 deltidinm of the larger valve ; from the Magnesian Lime- 

 stone of the Carboniferous period of Breedon Hill. 

 British Museum. Fig. ]« is from a gutta percha im- 

 pression from the same, to show the position of the 

 dental or rostral plates. 



2. — — Bolland. Collection of Professor Phillips. 



3. — suBCONiCA, Martin, sp. From the 'Petrif. Derb.,' tab. xlvii, figs. 6, 1 , 8. 



Middleton, Derbyshire. 



4. 5, 6. — TRiRADiALis, var. sexradialis, Phillips. Bolland. British Museum. 



7. — — A large example. From the same locality and collection. 



8. — — Ibid. Collection of Professor Phillips. 



9. — — Ibid. Museum of Practical Geology. 



10. — — Ibid. Collection of Professor Phillips. 



11. — — Ibid. Collection of Mr. E. Wood. 



12. — — var. trisulcosa, Philhps. ' Geol. of York./ vol. ii, pi. x, 



fig. 6. 

 13 — 18. — iNTEGRicosTA, I'ldllij)^. Cravcn district. Collection of Mr. E. Wood. 



19. — — A young shell, closely resembling Martin's representation 



of Anomites rotundatus. 



20. — ovALis, Phillips. A very large and fine example from the Wensleydale 



district. Collection of Mr. E. Wood. Another almost similar 

 is to be seen in the British Museum. 



21. — — From Derbyshire. Cambridge Museum. 



22. — — An imperfect example. From Coricburn, Campsie, Sterlingshire. 



23. — — A young shell. From Bolland. 



24. — — ? exarata, Fleming. From the original fragment in the collection 



of the late Dr. Flemino;. West Lothian, Scotland. 



25. 26. — — = hemisphcerica, M'Coy. Craven district. Fig. 25 from the 



collection of Mr. Reed, of York. 

 27. — INTEGRICOSTA ? Anowitcs rotundatus, Martin. From the original figure 



in the 'Petrif. Derb.,' tab. 48, fig. 11, 12. Middleton. 



