PLATE XLVI. 



CARBONIFEROUS SPECIES. 



Fig. 



1, 2. Chonetes coraoides? Soiv. From the Carboniferous limestone of Bundoran, 



in Donegal, and collection of the Geological 

 Society. 

 3,4. ,, papilionacea, Phillips. From Phillips's original example. Carbo- 



niferous limestone, Bolland. A portion 

 of one wing has been restored. 



5. „ ,, From Carboniferous shales near Settle, in Yorkshire. 



5 J A portion of the shell enlarged ; o, orifices left 

 by the broken spines ; p are pits left on the 

 cast by the asperities which covered the inner 

 surface of the shell. 



6. ; , ,, Internal cast, showing traces of the muscular 



impressions, from Ireland. 



,, Dahnaniana, Be Koninck. From the Carboniferous limestone of 



Settle, in Yorkshire. 



