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 OF THE ROYAL SOCIETY OF SCIENCES 



OF LI]6gE; the SOCIETY OF NATURAL SCIENCES OF NEUCHATEL; VICE-PRESIDENT OF THE COTTESWOLD 



naturalists' FIELD CLUB; CONSULTING SURGEON TO THE CHELTHNHAM HOSPITAL; 



AND MEDICAL OFFICER OF HEALTH TO THE URBAN SANITARY DISTRICTS 



OF CHELTENHAM, CHARLTON KINGS, AND LECKHAMPTON. 



PART Fir rn— DESCRIPTION OF SPECIES. 



Pages 329— 400 ; Plates XLIX— LII, LIIa, LIII— LXIX. 



LONDON: 

 FEINTED FOE THE PAL^ONTOGEAPHICAL SOCIETY. 



1882. 



