Appendix. . 153 



PLATE XX. 



Fig. 4S. Sphenopterls ? 



PLATE XXI. 



Fig. 49, Botlirodendron. (Lindley, Tab. SO.) 



Fig. 52. Uncertain. 



PLATE XXII. 



J 



Fig. 53. See Lepidodendron selaginoides. (Lindlcy, Tab. 12.) 

 Fig. 54. Compare with Stigmaria ficoides. (Lindley, Tab. 31.) 

 Fig, 55. Calamites. 



Fi^. 56 and 58. Uncertain. 



PLATE XXIH. 



Fio;. 35. Calamites. 



PLATE XXIV. 



Fig. 59. Pecopteris dentata? (Lindley.) 



Fiff. 60. Uncertain. 



PLATE XXV» 



Fig. 63. Lepidodendron. 



PLATE XXVI. 



Terehratula lapillus. (S. G. M.) Fig. 36. Shell suborbicular ; 

 superior valve gibbous in the middle ; inferior valve with a broad si- 

 nus in the middle ; center of the base gibbous. 



PhoJadomya elongata. (S. G. M.) Fig. 37. Shell much elon- 

 gatedj ventricose, with rather regular, broad, longitudinal sulci; 9n- 

 terior side very shorty obliquely truncated; beaks tumid. 



Productus piinctatus 7 (Sowerby) Fig. 33. Shell suborbicular, 

 decussated; inferior valve ventricose, with a broad central sinus. 



Productus hepar. (S. G. M.) Fig. 39. Shell suborbicular; in- 

 ferior valve with numerous transverse sulci, and a broad, but not 

 profound sinus : umbo profoundly gibbous, divided by a deep sinus. 

 ' Fig. 40, 41. Vertebrae of Encrini. 



Fig. 42. Indeterminate. 



Fig. 43. Indeterminate cast in slate, probably of a vegetable pro- 

 duction. 



PLATE XXVII. 



Fifr. 64. Uncertain. 



PLATE XXVIII. 



d 



Fig. 46. Productus. This species, of which the name cannot at 



OTl 



where It Is a common fossil. 



r 



Fig. 47. Indeterminate cast. 



Vol. XXIX.— No. 1. 20 



