206 REFERENCE TO PLATES. 



FIGURE. PAGE. 



38, 39. Cysticopsis letranensis Pfr. Original, . . .11 

 40-42. Cysticopsis auberii Orb. Kiister's Conchyl. Cab., t. 



168, f. 22-24, 11 



43, 44. Plagioptycha, loxodon Pfr. Original, . . .17 

 45-47. Plagioptycha phredra Pfr. Kiister's Conchyl. Cab., t. 



158, f. 16-18. L 23 



48-50. Plagioptycha platonis Pfr. Original, . . .16 

 51,5'. Plagioptycha diaphana Lara. Original. . . .22 

 53, 54. Plagioptycha santacruzensis Pfr. Original, . . 23 

 55, 56. Parthena dilatata Pfr. Kiister's Conchyl Cab., t. 152, 



f. 13, 14, 73 



57. Polymita brocheri Gutz. Novit. Conch., t. 61, f. 7, . 55 



58. Polymita brocheri Gutz. Original. . . . .55 



PLATE 20. 



59-64. Hemitrochus troscheli Pfr. Original, . . .28 

 65, 66. Hemitrochus cesticulus Gundl. Original, . . 33 



67, 68. Hemitrochus rufoapicata Poey. Reeve, f. 292, . 36 



69-71. Hemitrochus caribsea Weinl. Original, . . 26 



72, 73. Hemitrochus lucipeta var. Original, . . .32 

 74-76. Hemitrochus lucipeta Poey. Memorias, t. 26, f. 2, 4, 5, 32 

 77-78. Hemitrochus lepida Poey (--lucipeta) Ibid., t. 26, f. 



7, 9, . . _ . . 32 



79. Dialeuca subconica Ad. Original, . . . . .40 



80, 81. Hemitrochus velazqueziana Poey (=lucipeta) Me- 



morias, t. 1, f. 3, 4, . . .' . . . .32 

 82, 83. Cysticopsis buddiana Ad. Original, ... 7 



PLATE 21. 



I, 2, 5. Caracolus carocolla Linn. Fer., Hist., t. 59, f. 3, 4, . 120 

 3, 4. Caracolus insititia Shutt. Ibid., t. 59, f. 1, 2, . . 121 

 6, 7. Caracolus carocolla Linn, juv. Novit. Conch, t. 92, f. 



9, 10, 120 



8-10. Caracolus angistoma Fer. Histoire, t. 60, f. 1, . . 122 



PLATE 22. 

 Caracolus marginella Gmel.. Varieties. 



II. Caracolus gaskoini Pfr. Reeve, f. 286, . . . .127 

 12-15. Caracolus guterrezi Poey. Novit. Conch, t". 92, f. 3-6, 125 

 16, 17. Caracolus schwarzkna Pfr. Ibid., t. 67, f. 1, 2, . 125 

 18, 19. Caracolus bizonalis Desh. Fer., Hist., t. 63, f. 11, 12, 127 

 20, 20a. Caracolus mina Pfr. Kiister's Conchyl. Cab., 1. 136, 



f. 16, 17, 125 



22, 22a. Caracolus rostrata cupulata Pfr. Novit Conch., t. 91, 



f. 3, 4, . . . 126 



23-25. Caracolus jactata Gundl. Ibid., t. 90, f. 9-11. . .126 



