276 ME. J. W. GEEGORY ON THE 



IX. EXPLANATION OF THE PLATES. 



PLATE XXIX. 



Fig. 1. Notamia wetherelli (Busk), p. 226. Fig. 1 «, front view; Ih, lateral view. 



London Clay, Highgate. Brit. Mus. No. 497oL X 37 diam. 

 Fig. 2. Memhranipora eocena (Busk), p. 228. Loudon Clay, Highgate. Brit. Mus. 



No. 49729. X 16 diam. 

 Fig. 3. Membranipora eocena (Busk). View of the back of the zoarium. London 



Clay, Highgate. Brit. Mus. No. 6330. X 12 diam. 

 Fig. 4. Membranipora eocena (Busk). Woolwich and Reading Beds, Croydon. Brit. 



Mus. X ^ir diam. 

 Fig. 5. Membranipora tenuimuralis, n. sp., p. 2.31. London Clay, Highgate. Brit. 



Mus. No. 49736 (part of one of Busk's types of M. lacroixi). X f- diam. 

 Fig. 6. Membranipora tenuimuralis, n. sp. London Clay, Highgate. Brit. Mus. 



No. 49736. X f diam. 

 Fig. 7. Membranipora tenuimuralis, n. sp. London Clay, Highgate. Brit. Mus. 



No. B 4331. X 55 diam. 

 Fig. 8. Membranipora virguliformis, n. sp., p. 232. London Clay, Highgate. Brit, 



Mus. No. 49658. X 25 diam. 

 Fig. 9. Membranipora disjuncta, n. sp., p. 232. London Clay, Highgate. Brit. Mus. 



No. 69205. Fig. 9 «. X 4 diam., to show general arrangement of the 



zoarium. Fig. 9 5. X 12 diam., to show structure of the zooecia. 

 Fig. 10 a. Membranipora crassomuralis, n. sp., p. 229. Barton Clay, Barton. Brit. 



Mus. No. 49741. X 32 diam. 

 Fig. 10 b. Membranipora crassomuralis, n. sp. Barton Clay, Barton. Brit. Mus. 



No. 49740. X 32 diam. Another specimen growing on a strongly ribbed 



Pecten. 

 Fig. 11. Membranipora buski, n. sp., p. 229. Headon Beds, Colwell Bay. Brit. Mus. 



No. B 4625. X 55 diam. 

 Fig. 12. Membranipora buski, n. sp. Headon Beds, Colwell Bay. Mus. Pract. Geol. 



Specimen with numerous ocecia. X 55 diam. 

 Fig. 13. Lunulites transiens, n. sp., p. 233. Barton Beds, Barton. Brit. Mus. No. 



49724. X 24 diam. View of the external layer of the zoarium. 

 Fig. 14. Lunulites transiens, n. sp. Bracklesham Beds, Bracklesham. Brit. Mus. 



No. B 4339. X 24 diam. 



