PLATE XIX. 



PAGE 



Fig. 56. Volutilithes Navarroensis. Natural size. 102 



Fig. 57. Morio (Sconsia) tuberculatus. Natural size. 104 



Fig. 58. ? Ficus OYPRiEOiDES. Natural size. 105 



Fig. 59. Amauropsis alveata. Natural size. 110 



Fig. 60. Lukatia avellana. Natural size. 105 



Fig. 61. L. Shumardiana. Natural size. 10(3 



Fig. 62. Gyrodes expansa. Natural size. 108 



a, b. Adult form. 



c. A younger specimen, to show the variation of age. 



Fig. 63. Amauropsis oviformis. Natural size. 109 



Fig. 64. Cinulia obliqua. Natural size. Ill 



a. Side view. 



h. Back view of a smaller specimen, 

 c. Surface magnified. 



Fig. 65. C. Mathewsonii. Magnified. Ill 



Fig. 66. Nerinea dispar. Natural size. A cast. 113 



a. View of the surface from a wax impression of the mould. 



Fig. 67. ? Acteonina pupoides. Natural size. 113 



Fig. 68. A. (Acteonella?) Californica. Natural size. 114 



An outline restoration, from imperfect specimens. 



Fig. 69. ? Globiconcha Kemondii. Natural size. 114 



An outline, from a mutilated specimen. 



Fig. 70. Chemnitzia Spillmani. Magnified. 115 



Fig. 71. Architectonica Veatchii. 110 



Natural size, and magnified. 



