BRITISH 



FOSSIL BRACHIOPODA. 



BY 



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



MEMBRK ETRANGER DE L'lNSTITUT DES PROVINCES ; OF HIE GEOLOGICAL SOCIETY OF FRANCE; LINNF.AN SOCIETY OF NORMANDY; 



IMPERIAL MINKRALOGICAL SOCIETY OF ST. PETERSBURGII ; ROYAL SOCIETY OF LIEGE; ZOOLOGICAL SOCIETY OF VIENNA; GEOLOGICAL SOCIETY 



OF GLASGOW; ACADEMY OF SCIENCES OF ST. LOUIS, AMERICA; PAL.EONTOGRAPHICAL SOCIETY OF BELGIUM, ETC. 



VOL. II. 

 PERMIAN AND CARBONIFEROUS SPECIES. 



LONDON: 



PRINTED FOR THE PALjEONTOGRAPHICAL SOCIETY 

 1857 — 1862. 



