EXPLANATION OF THE PLATES. 



319 



Fig. 



53. Clausilia bidens, and 



mouth magnified. 



54. Kolphii, and mouth 



magnified. 



55. biplicata, and mouth 



magnified. 



56. papillaris, and mouth 



magnified. 



57. labiata, and mouth 



magnified. 



58. nigricans, and mouth 



magnified. 



59. nigricans, var. dubia. 



Table VI. 



60. Biilimus decollatus. 



61. Goodullii, and magni- 



fied. 



62. lackamensis. 



63. hordeaceus. 



64. Pupa. 



65. Zua lubrica, and mouth 



magnified. 



66. Acicula fusca, and magni- 



fied. 



67. Bulimus acutus. 



68. cylindrus. 



69. ventricosus. 



70. Balea perversa, and mouth 



magnified. 



71. Achatina acicula, and 



magnified, 



72. octoiia. 



73. Succinea putris. 



74. PfeifTeri. 

 74.* PfeifFeri, var. 

 139. oblonga. 



Table VII. 



75. Cyclostoma elegans. 



76. ferrngineum. 



77. Carychium minimum, and 



magnified. 



78. Pupa umbilicata, shell and 



its mouth magnified. 



Fig. 



Table IX. 



100. Limnaeus auricularius. 



101. perejjer. 

 101*. See Tab. XI. 



102. scaturiginum, copied 



from Drap. 



103. Amphipeplea glutinosa. 



