PLATE LTI. 



CARBONIFEROUS SPECIES. 



{Supplementary illustrations.) 



Fig. 



1. Spirifera striata, Martin. An elongated specimen from the Lower Scar limestone of Settle, in 



Yorkshire, collection of Mr. Burrow. 



2. ,, „ A very transverse example, Sp. attenuata, Sow. From Little Island, Cork, 



collection of Mr. J. "Wright. 



3. „ cuspidata, Martin. From the Lower Scar limestone of Settle, in Yorkshire. 



4. „ subconica, Martin. A remarkable specimen, showing its beautiful laminated sculpture, 



from the Carboniferous limestone of Wetton, Staffordshire, 

 collection of Mr. Carrington. 4"- portion of the ornate surface 

 enlarged. 



5. ,, distans, Sow. This specimen was labelled Sp. bicarinata by Professor M'Coy, and is 



from the Carboniferous limestone of Cork, in Ireland, collection 

 of Mr. J. Wright. 



6. ,, ditplicicosta, Phillips. With a prolonged mesial fold, and resembling the figure in PI. V, 



fig. 35, of the present Monograph, there erroneously termed 

 Sp. trigonalis. From the Carboniferous limestone of Derby- 

 shire, collection of Dr. Fleming, of Manchester. 



7. ,, ? ,, From the Carboniferous limestone of Allstonefield, near Wetton, in Stafford- 



shire. This is a curious form, of which I have seen several specimens, 

 and in which the apex of the beak of the ventral valve is at a lower level 

 than the umbone of the dorsal valve; it is, perhaps, a malformation of 

 Sp. trigonalis or bisulcata, as some of the specimens have much the 

 appearance of that species. 

 8. „ ovalis, Phillips. Interior of the dorsal valve, to show the compressed shape assumed by 



the spirals. I have seen several examples so disposed in this as well 

 as in Sp. integricosta. From the Carboniferous limestone of Wetton, 

 in Staffordshire. 

 Spiriferina cristata, var. octoplicata, Sow. From Brockley, near Lesmahago, Lanarkshire. Fig. 10 



from Wetton, in Staffordshire. 

 ,, octoplicata, var. biplicata, Dav. From the Lower Scar limestone, Settle, in York- 

 shire. 

 ,, ,, A specimen with three plaits on the mesial fold (very uncommon), 



figured by Sowerby in the ' Min. Conchology.' 

 ,, insculpta, Phillips. Two shapes from the Lower Scar limestone of Settle. 



„ acuta, Martin. Fig. 16 the original figure from a Derbyshire specimen. Fig. 17 



from Settle. 

 Athyris Carringtoniana, Dav. Carboniferous limestone of Wetton, in Staffordshire. 

 Chonetes Buchiana, De Kon. A large specimen from the Lower Scar limestone of Settle. The 



specimens from the limestone have their ribs usually more 

 numerous and smaller than those which occur in the shales of 

 Malham Moor, near Settle. 



22. Camarophoria 1 From the limestone of Wetton, in Staffordshire ; it resembles much, 



but in large certain specimens of Camarophoria crumena. ? 



9, 



10. 



11, 



12. 



13. 





14, 



15. 



16, 



17. 



18- 



-20. 



21. 





