EXPLANATION OF PLATES. 415 
FIGURE. PAGE, 
57. Ceritella acuta, Morris and Lycett.. Oolite, England, . 248 
58. Triforis perversus, Linn. Mediterranean, . . 249 
59. Triforis (Ino) corrugatus, Hinds. Sandwich Islands, «249 
60. Triforis (Sychar) vitreus, Hinds. Malacca, . . 249 
61. Triforis (Mastonia) vulpinus, Hinds. New "Ireland, . 249 
62. Exelissa (Kilvertia) formosa, Lycett. Oolite, England, 249 
63. Potamides mamillatum, Risso. Mediterranean, : . 250 
PLATE 70. 
64. Fastigiella carinata, Reeve, .. ; : . 249 
65. Triforis (Leocochlis) granosus, Wood. Norway, . 250 
66. Potamides ebeninum, Brug. Australia, ‘ ‘ . 250 
67. Potamides (Brotia) pagodula, Gould. Bur mah, . . 250 
68. Potamides (Tympanotomus) fuscata, Linn. W. Africa, 250 
69. Potamides (Lampania) zonale, Brug. Australia, . 250 
70. Potamides (Pyrazus) suleatum, Brug. China, . . 250 
71. Potamides (Telescopium) telescopium, Brug. India, . 251 
72. Potamides (Cerithidea) decollatum, Linn. East Indies, 251 
73. Potamides (Cerithidea) obtusum, Lam. PLMA DG, ~ 251 
74. Paludomus conicus, Gray. India, ; ; . 252 
75. Paludomus (Philopotamis) nigricans, Reeve. Ceylon, 252 
76. Paludomus (Tanalia) loricata, Reeve. Ceylon, . 252 
T7. Paludomus (Stomatodon) Bensoni, Brot. Southern 
India, . . j . 252 
78. Melania ( (Melanella) glans, von dem Busch. Java, . 252 
79. Melania (Pachychilus) levissima, Sowb. Mexico, -- 252 
80. Melania (Aylacostoma) scalaris, Spix. Brazil, . . 252 
81. Melania (Sulcospira) sulcospira, Mousson. Java, . 253 
82. Melania (Nigritella) decollata, Lam. Madagascar, etc., 253 
83. Melania (Melanoides) episcopalis, Lea. Malacca, . 253 
84. Melania (Melania) hastula, Lea. Philippines, : . 253 
85. Melania (Striatella) tuberculata, Mull. East Indies, . 253 
86. Melania (Plotia) bellicosa, Hinds. Fiji Islands, . «caps 
87. Melania (Plotiopsis) Ballonensis, Conrad. Australia, . 253 
88. Melania (Tiara) setosa, Swains. Fiji Islands, ‘ . 253 
89. Melania (Tiaropsis) Winteri, Busch. Java, . , « 253 
90. Melania (Tarebia) Celebensis, Quoy. Celebes,  . » 253 
91. Melania (Sermyla) tornatella, Lea. Philippines, . - 253 
92. Melania (Oncomelania) Hupensis, Gredler. China, . 254 
PLATE 71. 
93. Dorissa brevier, Troschel. Guiana, ‘ , : . 254 
94. Claviger aurita, Lam. Senegal, . ‘ : : . 254 
95. Tiphobia Horei, E. A. Smith. L. Tanganyika, Africa, 254 
96. Hemisinus lineolatus, Wood. Jamaica, : ' . 254 
97. Hemisinus (Verena) crenocarina, Mor. Brazil, . . 254 
