PLATE XLV. 



CARBONIFEROUS SPECIES. 



Fig. 



1,2. Chonetes? comoides ? Sowerby. From the Carboniferous limestone, 



Trefonen, south-west of Oswestry. 



In the collection of Mr. G. W. 



Ormerod, of Manchester. 



3,4. „ ,, Interior of ventral valve, showing the strong, articu- 



lating teeth, from Llanymynech. Same collection . 



5, 6. ,, „ Longitudinal section and weathered specimen, from 



Tidenham Chase (Gloucestershire), near Chepstow. 



7. „ comoides, Sow. A characteristic example, locality lost. Bristol 



Museum. 



