BY H. LEIGHTON KESTEVEN. 483 



36. — Tryon. — Structural and Systematic Conchology. 



37. Manual of Conchology, Vol. iii. 



38. — Vekrill, A. E. — ' Eevision of the Pectinidse.' Trans. Connecticut 



Acad., X., pt.i., 1899. 

 39. — Watson — Challenger Rep. Zool., xv.. Gasteropoda. 



EXPLANATION OF PLATE XVII. 



LOTOEIUM APICES. 



Fig. 1. — Lotoriinn woodsi, Tate, 



Fig. 2. — ,, radiale, Tate. 



Fig. 3. — ,, tumulosum, Tate. 



Fig. 4. — ,, ahbotti, Tenison- Woods. 



Fig. 5. — ,, protensum, Tate. 



Fig. 6. — ,, cyphus, Tate. 



Fig. 7. — ,, oUgosfirum, Tate. 



Fig. 8. — ,, tortirostris , Tate. 



Fig. 9.— ,, textile, Tate. 



Fig. 10. — ,, cornutum, Perry. 



Fig. 11. — ,, vespaceum, Lamarck. 



Fig. 12. — ,, chlorostomum, LiSiniSiYck. 



Fig. 13. — ,, aquatile, Pteeve. 



Fig. 14. — ,, sinens e, BiBewe. 



Fig. 15. — ,, gemmatum, Eeeve. 



Fig. 16. — ,, elongatum, Reeve. 



Fig. 17. — ,, tuherosiim, Lamarck. 



Fig.18. — ,, thersites, Reeve. 



Fig. 19. — ,, spengleri, Chemnitz. 



Fig. 20. — ,. strangei, Adams & Angas. 



Fig. 21. — ,, rutilum, Menke. 



Fig. 22. — ,, lahioswn, Wood. 



Fig. 23. — ,, verrucosum. Reeve. 



Fig. 24. — ,, ehurneum, Reeve, 



Fig. 25, — ,, quoyi, Reeve. 



