410 EXPLANATION OP PLATES. 



FI GUKE. 



Plate 63. 



41. Natica Alderi, Forbes. England, 



42. Natica canrena, Linn. West Indies, 



43. Natica (Stigmanlax) caneellata, Lam. West Indies, 



44. Natica (Lunatia) heros, Say. Atlantic Coast, U. S., 



45. Natica (Neverita) duplicata, Say. Atl. Coast, U. S. 



46. Natica (Anompliala) fluctuata, Sowb. Philippines, 



47. Natica (Mamilla) maura. Lam. Philippines, 



48. Natica (Mamma) straminea, Recluz. Polynesia, . 



49. Natica (Amaura) Candida, Moller, Boreal seas, 



50. Natica (Amauropsis) canaliculata, Gould. Newfound 



land, etc., ........ 



51. Natica (Robinsonia) Ceylonica, Nevill. Ceylon, 206 



52. Sigaretus neritoideus, Linn. Straits of Malacca, 



53. Sigaretus (Naticina) papilla, Gmelin. Philippines, 



54. Sigaretus (Cryptostoma) haliotoides, Linn. W. Indies 



55. Velutina capuloidea, Blainv., .... 



56. Yelutina Isevigata, Linn. England, 



51, 58. Lamellaria perspicua, Linn. Europe", 



59. Lamellaria (Marsenina) depressa, Sutton, 



60. Cryptocella tentaculata, Montagu. Europe, 



61. Cryptocella latens, Miiller, . . . . 



62. 63. Coriocella nigra, Blainv., . . 



64, 65. Limneria zonata, Gould. Northern United States 



204 

 204 

 205 

 205 

 205 

 205 

 205 

 205 

 205 



206 

 275 

 207 

 207 

 207 

 207 

 207 

 209 

 210 

 210 

 210 

 210 

 208 



Plate 64. 



66. Natica (Ampullina) sigaretina, Lam. Eocene, Paris, . 205 



67. Natica (Naticopsis) Phillipsii, M'Coy. Carboniferous, 



Great Britain, 206 



68. 69. Velutina (Leptonotis) expansa, Whitfield. Eocene, 



Alabama, 208 



70. Gj^rodes alveata, Conrad. Cretaceous, Mississippi, . 206 



71. Natica (Isonema) humilis, Meek. Devonian, Ohio, . 206 



72. 73. Onchidiopsis glacialis, Sars. Norway, . . . 210 



74. Velutina (Platyostoma) Niagarensis, Hall. Niagara 



group, New York, ....... 208 



75. Velutina (Strophostylus) obtusa, Hall. Lower Helder- 



berg. New York, 208 



76. Naticodon spiratum, Sowb. Carb., Europe, . . 211 



77. Crucibulum (Catillina) concamerata, Reeve, . . 212 



78. Crepidula (Spirocrypta) pileum, Gabb. Cret., Cal., . 213 



79. Galericulus altus, Seely. Cretaceous, . . . .213 



80. Capulus (Brocchia) sinuosa, Bronn. Tertiary, Europe, 214 



81. 82. Platyceras ventricosum, Conrad. Young and adult, 214 



83. Platj^ceras (Orthonychia) spirale,Hall. Palseozoic,U.S., 214 



84. Euspira canaliculata, Morris and Lycett. Oolite, Eng., 206 



