. The Quarterly journal of the Geological Society of London. 4.) 3. The same, showing magnified sculpture. 4. Ficus simplex (Beyrich). (See p. 14.) 5. The same, showing details of sculpture, magnified. 6. Xenophora sp. (See p. 14.) Fragmentary specimen exhibiting adherent cavities on the whorl. 7. Naticina alderi (E. Forbes). (See p. 15.) 8. The same. 9. Ringiculella ventricosa (J. de C. Sowerby). (See p. 15.) Front. view, X 3. 10. The same, showing sculpture lines, magnified. 11. Nucula Isevigata J. Sowerby. (See p. 16.) 12. Yoldia oblongoides (S. V. Wood). (See p. 16.) 13. Isocardia liumana
. The Quarterly journal of the Geological Society of London. 4.) 3. The same, showing magnified sculpture. 4. Ficus simplex (Beyrich). (See p. 14.) 5. The same, showing details of sculpture, magnified. 6. Xenophora sp. (See p. 14.) Fragmentary specimen exhibiting adherent cavities on the whorl. 7. Naticina alderi (E. Forbes). (See p. 15.) 8. The same. 9. Ringiculella ventricosa (J. de C. Sowerby). (See p. 15.) Front. view, X 3. 10. The same, showing sculpture lines, magnified. 11. Nucula Isevigata J. Sowerby. (See p. 16.) 12. Yoldia oblongoides (S. V. Wood). (See p. 16.) 13. Isocardia liumana (Linnasus). (See p. 18.) 1 Mellem-Miocasne Blokke fra Esbjerg Danmarks Geol. Undersog. ser. 4,.vol. i, No. 5 (1916) pis. i-iii, pp. 58. 2 Ueber das Marine Altmiocan im Nordseebecken Neues Jahrb. Beilage-Band xli (1916) p. 59, pis. i & ii (maps). 3 B. B. Newton, On the Conchological Features of the Lenham Sandstonesof Kent & their Stratigraphical Importance Journal of Conchology, vol. xv(1916) pp. Ill, 112. Quart. Journ. Geol. Soc. Vol LXX11, 6. M. Woodward, del. Bemrose, Collo.,Derby. TERTIARY MOLLUSCA FROM NORTH SEA LIMESTONE. [All the figures are of the natural si3e, except where otherwise marked.] j I / part 1] LIMESTONE FROM THE NORTH SEA. 21 Fig. 14. Sinodia tertiaria, sp. nov. (See p. 18.) Eight valve, external view. 15. The same specimen, showing dentition. 16. Wax model of a limestone cavity of another example, with parts of both valves in the closed condition. 17. Tellina benedeni Nyst & Westendorp. (See p. 19.) Internal cast, showing features of the pallial line, etc., accompanied by fragmentsof shell-structure. Discussion. The President (Dr. A. Smith Woodward) alluded to theinterest of the discovery in submarine geology which had beenstudied with so much care by the Author. So far as could bejudged from the accounts of the trawlers, the block of rockwas broken from a prominent ridge well known to them. Helooked forward to important results from borings in the
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