INDEX TO VOLUME IL 
THE ASTEHOIDEA AND OPHIUEOIDEA, 
Ammonitic Divisions of the Lias and op the Infekioe Oolite : — 
PAGE 
- Murchisonse (Inf. Oolite) 
Jurensis (Upper Lias) 
communis „ 
spinatus (Middle Lias) 
margaritatus 
capricornus 
j Ibex „ 
Zones of Ammonites ^ Jamesoni 
raricostatus (Lower Lias) 
oxynotus 
obtusus 
Tiirneri 
Bucklandi 
angulatus 
^ planorbis 
Classieication of the Astekoidea and Ophiukoidea by Authoks : — 
Agassiz . 
Baster 
De Blainville 
Delle Chiaje 
Forbes 
Gray- 
Huxley . 
Janus Plancus 
Linck 
Miiller and Troschel 
Nardo 
Tiedemann 
Wrisht . 
ii, iii, 1- 
