To face p. 486.] Quart. Joum. Geol. Soc. Vol. LXYIII, PI. XLIV. 



Fig. 1. — Sha]) Abbey Cliff: Solenopora Sub-zone. 



P. de &. B. photo. 



[The figure points to the Lower Solenopora Band : 

 the Proava Band Hes at the top of the cliff.] 



Fig. 2. — Ilalton Green, Arnside District : 

 Knoll-reef Breccia (D-J)^). (See p. 515.) 



Fj. J. G-. photo. 



