CONTENTS. 



Desckiption of the Corals from the Zone of Ammonites angulatus 



(continued) .45 



Description of the Species . . . . . .46 



On the Corals of the British and European Lower Liassic Deposits of 



the Zones of Ammonites angulatus, Ammonites planorbis, and Avicula 



contorta ......... 47 



List of Species from the Continental Zone of Ammonites angulatus 48 



List of Species from the Continental and British Strata of the Zone 



OF Ammonites angulatus . .49 



Description of Species from the Zone of AmmonitesBucklandi (bisulcatus) 31 

 List of the Species ..... ... 55 



Description of the Species from the Zone of Ammonites obtusus 56 



Desckiption op the Beds which contain the Madreporabia of the Zone 



of Ammonites raricostatus . . . . .57 



Description of the Species . . . . . . .58 



List op the Species ........ 61 



List of the Species from the Zones of the Lower Lias above the Zone , 



OF Ammonites angulatus . . .61 



Corals from the Middle Lias : of the Zones of Ammonites Jamesoni and 



Ammonites Henleyi . . . .62 



Enumeration of the British Liassic Species . . . . .64 



Description and Notice of Species from the Zone of Ammonites planorbis 65 

 List of Species from the Zone of Ammonites planorbis . . .66 



Notice of the indeterminable Corals of the Avicula contorta Zone 



AND White Lias of the British Isles (Rh^tic of Moore) . 66 



Note on the Age of the Sutton Stone and the Brocastle, &c., Deposits . 69 

 Index to Nos. 1 and 2 op Part IV . . . .72 



