A MONOGEAPH 



BRITISH FOSSIL BRACHIOPODA, 



THOMAS DAVIDSON, LL.D., F.E.S., F.L.S., F.G.S., 



VICE-PEEaiDENT OP THE PAL^ONTOaEAPHICAL SOCIETY; MEMBER OF THE GEOLOGICAL SOCIETIES OP FEANCE, BELGIUM 



EDINBUEGH, GLASGOW, AND OP CORNWALL; POEEIGN MEMBER OF THE PROVINCIAL INSTITUTE OF FRANCE; OF THE 



LINNEAN SOCIETY OP NORMANDY; CORRESPONDING MEMBER OP THE IMPERIAL ACADEMY OF SCIENCES OP ST. 



PETEESBUEG; OP THE IMPERIAL MINEEALOGICAL SOCIETY OP ST. PETEE3UURG; OP THE IMPEHIAL SOCIETY 



OP NATURALISTS OP MOSCOW; OP THE ROYAL ACADEMIES OF BELGIUM AND BAVARIA; OP THE ROYAL 



SOCIETY OP HOLLAND, HAARLEM; OP THE EOYAL SOCIETY OP LIEGE; OF THE ACADEMY OP ST. 



LOUIS; OF THE AMERICAN PHILOSOPHICAL SOCIETY, PHILADELPHIA; OP THE INSTITUTE OP 



ALBANY, UNITED STATES; OP THE ZOOLOGICAL SOCIETY OP VIENNA; OP THE PAL^ONTO- 



GEAPHICAL SOCIETIES OP BELGIUM AND OF SWITZERLAND; OP THE MALACOLOGICAL 



SOCIETY OF BELGIUM; HON. MEMBER OP THE GEOLOGISTS' ASSOCIATION, 



LONDON ; OF THE DUDLEY AND MIDLAND GEOLOGICAL AND SCIENTIFIC 



SOCIETY ; OP THE NATUEAL HISTOEY SOCIETY OF GLASGOW ; AND 



OF THE YOEKSHIEE PHILOSOPHICAL SOCIETY, ETC. ETC. 



VOL. IV. 



TERTIARY, CRETACEOUS, JURASSIC, PERMIAN, AND CARBONIFEROUS 



SUPPLEMENTS ; 



AND 



DEVONIAN AND SILURIAN BRACHIOPODA THAT OCCUR IN 



THE TRIASSIO PEBBLE BED OF BUDLEIGH 



SALTERTON IN DEVONSHIRE. 



LONDON : 

 PRINTED FOE THE P AL^ONTOGE APHIC AL SOCIETY. 



1874—1882. 



