MONOGRAPH 
ON THE 
LIAS AMMONITES 
THE BRITISH ISLANDS. 
THOMAS WMGHT, M^D.^ F.R.S.^ F.G.S.^ 
VICE-PEESIDENT OF THE PAL^ONTOGEAPHICAL SOCIETY; COKBESPONDING MEMBEK OF THE KOYAL SOCIETY 01' SCIENCES 
OP LIEGE; THE SOCIETY OP 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 THIRD— CLASSIFICATION. 
Pages 165—264; Plates XIX— XL. 
LONDON: 
PRINTED FOR THE PALJiONTOGRAPHICAL SOCIETY. 
1880. 
