EXPLANATION OF PLATES. 
429 
FIGURE. . PAGE. 
56. Pterodonta inflata, d’Orb. Cret., France, P > LOO 
57. Ringicula (Ringinella | clementina,d’Orb. Cret., France, 357 
58. Cinulia globulosa, Desh. Cret., France, : - . 358 
59. Cinulia (Oligoptycha) concinna, Meek. Cret., Dakota, 358 
60. Cinulia (Avellana) incrassata, d’Orb. Cret., France, . 358 
61. Cylichna (Actzeonella) crassa, d’Orb. Cret., France, . 359 
62. Etallonia prisca, Desh. Eocene, Paris basin, . 362 
PLATE 89. 
63. Akera soluta Chemn. Philippines, : , : - 362 
64. Akera (Cylindrobulla) Beauii, Fischer. Guadaloupe, . 363 
65, 66. Lobiger Philippii, Krohn. Sicily, . : . 363 
68, 70. Lophocercus Sieboldi, Krohn. Mediterranean, - 362 
67, 71. Aplysia depilans, Linn. Europe, : - 363 
69. Phyllaplysia ornata, Desh., : : : . 364 
72. Aplysiella petallifera, Rang. Mediterranean, . 364 
73. Dolabrifera Cuvieri, Adams. Isle of Bourbon, . 364 
74, 75. Dolabella Teremidi, Rang. Society Isles, ~ . 365 
16, 77. Syphonopyge livida, d’Orb. Rio Janeiro, - 365 
78. Notarchus ocellatus, Rang, . 5 - ‘ . 365 
79. Aclesia rufa, Quoy. Moluccas, . = . 365 
80. Bursatella Leachii, Blainv. East Indies, 4 . 365 
81. Stylocheilus longicauda, Quoy and Gaimard. N. Guinea, 365 
82, 83. Pleurobranchus citrinus, Riippell. Red Sea, . . 366 
84. Runcina Hancocki, Forbes. England, . : . 367 
85. Neda luniceps, Cuvier. So. Europe, : . 367 
86. Susania testudinaria, Phil. Mediterranean, . . 367 
87. Umbrella Mediterranea, Lam. Mediterranean, . 368 
88. Umbrella Indica, Lam. East Indies, : . 368 
89. Tylodina punctulata, Raf. Europe, , - 368 
90. Pleurobranchus (Pleurobranchea) Meckelii, Blainy. 
Mediterranean, . ; ‘ : : : : . 366 
91. Posterobranchea maculata, d'Orb. So. America, . 2 O60 
PLATE 90. 
92. Doris Johnstoni, Alder and Hancock. England,. . 369 
93. Chromodoris magnifica, Quoy. East Indies, . 370 
94. Hexabranchus sanguineus, Riippell. Red Sea, . 371 
95. Lamellidoris Leachii, Blainv. Mediterranean, - 372 
96. Lamellidoris scutigera, d’Orb. Europe, . B12 
97, Acanthodoris pilosa, Miiller. North Sea, ' . 372 
98. Sphxrodoris grandiflora, Rapp. Mediterranean, . 373 
99. Atagema carinata, Quoy. New Zealand, . 374 
100. Doridopsis viridis, Pease. Polynesia, . . 375 
1. Ceratodoris eolida, Quoy. Polynesia, . : . 371 
2. Casella Gouldii, H. and A. Adams. Australia, 4 . 375 
3. Triopa claviger, Miill. England, . ; . 376 
