Appendix. 151 



Donax rusticus. (S. G. M.) Fig. 15. Ovato-triangular, convex, 

 with obsolete concentric undulations : posterior side produced, cu- 

 neate. 



Fig. 16. Venus. Lin. 



PLATE IV. 



^'Fig. 5. See Sternberg, Tab. 5. 



XFig. 6. Uncertain. 



^ Fig. 8. Pecoptoris ; near P. Serlii. (Brong. pi. 85.) 



y Fig. 9. Uncertain. 



PLATE V. 



^Fig. 7. Compare with Stigmaria ficoides. (Lindley, Tab. 31.) 

 one of the commonest fossils of the coal formation. 

 \Fig. 11 and 15. Uncertain. 



PLATE VI. 



^'^Fig. 12. Phytolithus cancellatus. (Steinhaur, Am. Phil. Trans.) 

 K Fig. 13 and 14. Uncertain. 



PLATE Vli. 



?VFig. 16. Uncertain. 

 ^ Fig. 17. Calamites. 

 y Fig. 18, 19, 20, and 21. Uncertain. 



. PLATE VIII. 



X Fig. 34. Uncertain. 



I/' Fig. 36. Calamites; near G. cannseformis. (Brong. pi. 21.) 

 yFig. 37. Calamites. 

 |/Fig. 38 and 39. Calamites ; near C. ramosus. (Brong. pi. 17.) 



PLATE IX. 



* Fig. 30. Asterophyllites ? (Sternberg, Tab. 51, Fig. 2.) 

 /Fig. 32. Calamites ? also approaches Sigillaria. 

 •*Fig. 33. Uncertain. 



PLATE X. 



^KFig. 22. Uncertain. 



|/Fig. 23. Pecopteris : near P. cyathea. (Brong.pl. 101.) 

 t^Fig. 24. Pecopteris — on the upper part of the figure. 



PLATE XI. 



■^ Fig. 25. Pecopteris? 



^ Fig. 26. Left hand figure, near Taeniopteris ; but the frond is 



more elongated, and less dilated towards the base. 



^ PLATE XII. 



^■^Fig. 27. Mutilated Pecopteris ? 

 I-Fig. 28 and 29. Pecopteris. 



