A MONOGRAPH 



OK 



BRITISH 



CARBONIFEROUS BRACHIOPOM. 



BY 



THOMAS DAVIDSON, F.R.S., F.G.S. 



ETC. 



PART V. 

 FOURTH PORTION. 



LONDON: 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY. 



1861. 



