MONOGRAPH 



LIAS AMMONITES 



THE BRITISH ISLANDS. 



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



VICE-PRESIDENT OF THE PAL^ONTOGRAPHICAL SOCIETY; CORRESPONDING MEMBER Oi' THE ROYAL SOCIETY OF SCIENCES 



OF LIEGE; 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. 



PllINTEl) FOK THE PAL^ONTOGllAPHICAL SOCIETY. 



1883. 



