342 REFERENCE TO PLATES, VOL. XVHI. 



FIGURE PAGE 



6. Tortaxis servaini Mab. Bull. Soc. Mai. Fr 12 



7-9. Prosopeas tchehelense Morg. Specimen 



10. Prosopeas tchehelense Morg. Bull. Soc. Zool. Fr. ... 31 



11, 12. Prosopeas swettenhami Morg. Bull. Soc. Zool. Fr. 32 



13. Prosopeas teres Ad. P. Z. S 



14, 15. Prosopeas henrici Anc. Annales Marseille 



16, 17. Perrieria canef riana Sykes. J. of Malac 36 



18. Digoniaxis cingalensis Bs. Conch. Indica Vol. XIX. 



19, 20. Opeas layardi Bs. Conch. Indica 158 



21, 22. Tortaxis pfeifferi Mke. Novit. Conch 12 



PLATE 5. 



23, 24. Prosopeas suturale Mlldff. Bericht Senck 15 



25. Prosopeas cochliodes Pf r. Conch. Icon 



26, 27. Prosopeas cochliodes Pfr. Original 



28, 29. Prosopeas elongatulum Pfr. Conch. Cab 17 



30, 31. Prosopeas quadras! Hid. J. de Conch 



32. Prosopeas macilentum Rve. Conch. Icon 19 



33-35. Prosopeas gorontalense Sar. Celebes 20 



36-38. Prosopeas carolinum Marts. Conch. Mittheil. ... 19 



39. Prosopeas discernibilis Sm. P. Malac. Soc 20 



40. Prosopeas achatinaceum Pfr. Ostas. Landschn 21 



41. Prosopeas achatinaceum Pfr. Conch. Icon 21 



42. 43. Prosopeas paioense Bock. Specimen 25 



PLATE 6. 



66, 67. Curvella philippinica Pils. Type 70 



68, 69. Curvella grateloupi Pfr. Conch. Cab 68 



70. Prosopeas walkeri Bs. Conch. Ind 29 



71. Prosopeas argenteum Hend. Nautilus 24 



72. 73. Prosopeas anceyi Pils. Journ. de Conch 



74. Prosopeas decorticatum Rv. Conch. Icon 



75. Prosopeas lombockense Sm. P. Malac. Soc 21 



76. 77. Prosopeas haughtoni Bs. Conch. Ind 28 



78, 79. Prosopeas haughtoni Bs. Original 28 



80, 81. Prosopeas pealei Tryon. Original 29 



82-84. Prosopeas haughtoni Bs. var. Original 28 



PLATE 7. 



1, 2. Curvella sulcata Chap. Bull. Soc. Zool. Fr 48 



3. Curvella daillyana Pils. Bihang 48 



4, 5. Curvella guineensis Jonas. Abbild 52 



6, 7. Curvella redfieldi Pils. Type 49 



