370 T. Davidson — Tertiary Braekiopoda. 



Orbitiodes, etc. M. Bayan found it in his stages F and G, along 

 with Rh. Bolcenis, ia the bed of the Laverda. It is quite distinct 

 from Terebratulina tenuistriata (Leymerie), with which it has been 

 sometimes confounded. 



22. Terehratula Guiscardiana (Sequenza), PL XYIIL, Fig. 9. Sicilian 

 Brachiopoda. vol. i., Memorie della Societa Italiana di Scienze Na- 

 tural, pi. iv., fig, 6, 7, 1865. 



This is a very remarkable cuneiform shell, being broadest 

 anteriorly, rounded in front, and tapering to the beak. The valves 

 are almost equally deep and bent inwards round the border, so that 

 in old individuals there is a deep indenture all round the margin. 

 The surface is strongly marked by prominent concentric lines of 

 growth, and radiating zig-zag raised lines. The foramen is large 

 and the beak scarcely incurved. It occurs in the Lower Pliocene 

 (Zancleano) of Messina. 



{To he continued.) 



EXPLANATION OF PLATES XVII. AND XVIIL 



PLATE XTII. 



Figs. 1, 2. Terehratula hisinuata (Lam.), Eocene, Bolca, collection of Sig. Mene- 

 ghini. 

 3. Terehratula sjwwosa (Brocchi?), Eocene, BeUuno, same collection. 

 4, 5. Waldheimia B.ilarionis (Meneg.) MS., Eocene, St Jean HUarione, same 

 collection. 

 6,7,8. Terehratula Fumanensis (Meneg.), Sp., Eocene. 6. Mus. E'cole des 

 Mines, from the Zovo di Castelveccbio. 7, 8. From Fumano, Mus. of 

 Pisa. 

 9. Terehratula hiplicatceformis (Schauroth), Eocene, Novala, after Schauroth's 

 figures, Mus. of Coburg. 



10. Terehratula JRosavendiana (Seq.), Miocene, Eosignano, etc., collection of 



Sig. Rovasenda. 



11. Terehratula vitrea (Born), Pliocene, Messina. 



12. Terehratula elliptiea (Seq.), Older Pliocene, near Messina, after Sequenza. 



13. Terehratula Benoitiana (Seq.), Older Pliocene, after Sequenza. 



14. Terehratula minor (Philippi), Pliocene, near Messina. 



15. Terehratula orhieUlata (Seq.), Older Pliocene, Messina, after Sequenza. 



16. Terehratula sphenoidea (Philippi), Older Pliocene, Messina. 



17. Terehratula Bayaniana (Dav.), Eocene, Bolca, Mus. of the E'cole des 



Mines, Paris. I7a enlarged. 



18. Terehratula Meneghiniana (Seq.), Lower Pliocene, near Messina. 

 39. Terehratula Sequenziana (Dar.), Eocene, Crosara. 19a enlarged. 



PLATE X"VIII. 



1, 2. Terehratula grandis (Blum.) 1. Older Pliocene, Messina. 2. Pliocene, 

 Tuscany. Collection of Sig. Meneghini. 



3. Terehratula sinuosa (Brocchi), figure taken from the Encyclopedie Metho- 



dique, pi. 239, fig. 3. 



4. Terehratula sinuosa, Middle Miocene, Baldissero, collection of Sig. 



Eovasenda. 



5. Terehratula Pedemontana (Lamarck), Upper Miocene, Tuscany, from the 



type in the Museum of the Jardin des Plantes. 



6. Terehratula miocenica (Michelotti), Miocene, Gayi, after Michelotti. 



7. Terehratula anceps (Michelotti), Upper Miocene, St. Agata, after Michelotti. 



8. Terehratula Michelotiini (Seq.), Upper and Lower Pliocene, Messina. 



9. Terehratula Guiscardiana (Seq.), Lower Pliocene, Messina. 



