^J■\ 



/(fA- 



MONOGRAPH 



ON THE 



BRITISH FOSSIL 



ECHINODBRMATA 



OF 



THE OOLITIC FORMATIONS. 



BY 



THOMAS AYRIGHT, M.D., F.E.S. Edin., F.G.S., 



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



OF LIEGE; THE SOCIETY OF NATURAL SCIENCES OF NEUCHATEL; VICE-PRESIDENT OF THE COTTES-\VOLD 



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. 



'i. ■ 



JUL 1 8 1986 



VOLUME L— THE ECHINOIDEA. /^?*"'«? '"^f"^ 



/ 



LONDON: 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY, 



1857—1878. 



ZAX3SCI 



