MONOGRAPH 



LIAS AMMONITES 



THE BRITISH ISLANDS. 



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



VICE-PRESIDENT 0¥ THE ['AL/KONTOGRAPHICAL SOCIETY; CORRESPONDINCi MEMBER OF THE ROYAL SOCIETY OF SCIENCES 



OF LI^GE; THE SOCIETY OF NATURAL SCIENCES OF NEUCHATEL ; VICE-PRESIDENT OF THE COTTESWOLD 



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



AND MEDICAL OFFICER OF HEALTH TO THE URBAN SANITARY DISTRICTS 



OF CHELTENHAM, CHARLTON KINGS, AND LECKHAMPTON. 



PART SIXTH— DESCRIPTION OF SPECIES. 



Pages 401— 440 ; Plates LXX— LXXVII. 



LONDON. 



PRINTED FOK THE PAL^ONTOGKAPHICAL SOCIETY. 



1883. 



