REFERENCE TO PLATES. 417 



IGURE. PAGE. 



33. Tornatina pachys Wats. Chall. Rep., . . . .198 

 34-36. Retusa mariei Dautz. Camp. Sci., .... 207 

 37, 38. Tornatina avenaria Wats. Chall. Rep., . . .202 



PLATE 25. 



39-41. Tornatina protracta Dautz. Camp. Sci., . . . 182 



42. Tornatina arata Wats. Chall. Rep., . . . .199 



43. Tornatina amboinensis Wats. Chall. Rep., . . .196 



44. Tornatina coarctata Ad. Thes., . . . .193 



45. Tornatina planospira Ad. Thes., 192 



46. Tornatina biplex Ad. Thes., 192 



47. Tornatina olivula Ad. = bullata Kn. The?., . . . 183 



48. Tornatina cinctella Ad. Thes., . . . . .193 



49. Tornatina gracilis Ad. Thes., 194 



50. Retusa oliviformis Wats. Chall. Rep., . . . .207 



51. Tornatina simplex Ad. Thes., . . . . . 193 



52. Tornatina polita Ad. Thes., 192 



53-55. Retusa spatha Wats. Chall. Rep., . .218 



PLATE 26. 



56. Volvula sulcata Wats. Chall. Rep., . . '. .241 



57. Volvula minuta Bush. Tr. Conn. Ac., .... 237 



58. 59. Volvula paupercula Wats. Chall. Rep., . . .238 



60. Volvula rostrata Ad. Thes., 241 



61, 62. Volvula acuminata Brug. M. Sars., . . . .234 



63. Volvula oxytata Bush. Tr. Conn. Acad., . . .235 



64. Volvula striatula Ad. Thes., 239 



65. Volvula cylindrica Sm. = Smithii Pils. P. Z. S., . . 233 



66. Volvula eburnca Ad. Thes., .239 



67. Volvula angustata Ad. Thes., . .240 



68. Austrodiaphana brazieri Aug. P. Z. S 287 



69. Diaphana expansa Jeffr. Sars., .... 



70. 71. Diaphana hyalina minuta Brown, . . . 283 

 72-74. Diaphana densestriata Leche. Sv. Vet. Handl., 



75. Diaphana globosa Lov. Sars., ..... 286 



76, 77. Diaphana segueDzse Wats. Chall. Rep., . 



78-80. Cylichna semisulcata Dkv. Ind. Moll. Jap., . . 303 



PLATE 27. 



81. Atys dentifera Ad. Thes., . . . . . .276 



82. Cylichna decussata Ad. The?., 315 



83. Cylichna involuta Ad. Thes., 310 



84. Cylichna bizoua Ad. Thes., 323 



85. Cylichna biplicata Ad. Thes., 



86. Cylichna marmorata Ad. Thes., 323 



