MONOGRAPH 



LIAS AMMONITES 



THE BRITISH ISLANDS. 



THOMAS WRIGHT, M.D., F.R.S., F.G.S., 



VICE-PRESIDENT OF THE PALiEONTOGRiPHICiL SOCIETY ; CORRESPONDING MEMBER OF THE ROYiL SOCIETY OP SCIENCES 



OF LIEGE ; THE SOCIETY OP NATURAL SCIENCES OP NEUCHATEL ; VICE-PRESIDENT OP THE COTTESWOLD 



naturalists' field CLUB; CONSULTING SURGEON TO THE CHELTENHAM HOSPITAL; 



AND MEDICAL OFFICER OF HEALTH TO THE URBAN SANITARY DISTRICTS 



OF CHELTENHAM, CHAHLTON KINGS, AND LECKHAMPION. 



PART rOURTH— DESCRIPTION OF SPECIES. 



Pages 265— 328 ; Plates XXII a, XXII b, XLI— XLVIII. 



LONDON : 

 PRINTED FOR THE P AL^ONTOGR AP HIC AL SOCIETY. 



1881. 



