PLATE XIX. 



I'AGE 



Fig. 56. Volutilithes Navarroensis. Natural size. 102 



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



Fig. 58. ? Fictrs cypr^oides. Natural size. 105 



Fig. 59. Amauropsis alveata. Natural size. 110 



Fig. 60. Lunatia avellana. Natural size. 105 



Fig. 61. L. Shtjmardiana. Natural size. 106 



Fig. 62. Gyrodes expansa. Natural size. 108 



a, b. Adult form. 



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



Fig. 63. Amauropsis oviformis. Natural size. 109 



Fig. 64. Cinui.ia 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 



ft. 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 Eemondii. Natural size. 114 



An outline, from a mutilated specimen. 



Fig. 70. Chemnitzia Spillmani. Magnified. 115 



Fig. 71. Architectonica Veatchii. 116 



Natural size, and magnified. 



