XVI LIST OF ILLUSTRATIONS. 



Facing page. 



39. Eocene Pelecypoda and Gasteropoda 546 



40. Miocene Pelecypoda and Gasteroi )oda 546 



41. Miocene Pelecypoda and Gasteropoda 546 



42. Miocene Echinoidea and Pelecypoda 546 



43. Miocene Echinoidea, Pelecypoda, and Gasteropoda 546 



44. Miocene Pelecypoda and Gasteropoda 546 



45. Miocene Pelecypoda, Gasteropoda, and Crustacea 546 



46. Miocene Pelecypoda and Gasteropoda 546 



47. Pliocene areas 546 



48. Pliocene Pelecypoda and Gasteropoda 546 



49. Pliocene Brachiopoda and Pelecyi^oda 546 



50. Pliocene Pelecypoda Snd Gasteropoda 546 



51. Tertiary Turritellas 546 



52. Microstructure of Siliceous Sandstone 550 



53. A New Parasitic MoUusk 556 



54. Skulls of Old AVorld Porcupines 594 



55. Skulls of Old World Porcupines 594 



56. Skulls of Old ^Vorld Porcupines 594 



57. Tail Bristles and Vertebra? of Malayan Porcupines 594 



58. Skull of Epigaulus hatcherl 636 



59. Skull and lower jaw of Epigaulus hatcher i 636 



60. Skulls of Epigaulus hatcheri and Aplodoniia rnfus 636 



61. Pelvis, Femur, and Humerus of Epigaulus hatcheri 636 



62. Fore and hind foot of Epigaulus hatcheri 636 



63. Lower jaw and skeleton bones of Epigaulus hatcheri 636 



64. Skeleton bones of Ejngaulus hatcheri 636 



65. Vertebral column and Pelvis of Epigaulus Jiatchcri _ 636 



66. Opheodesoma spectahilis 744 



67. Aclinopyga, Holoth uria 744 



68. Holothuria 744 



69. Holothuria 744 



70. Hawaiian Holothwriidx 744 



71. Mesothuria, Pseud ostichopus 744 



72. Bathyplotes, Pseudostichopus 744 



73. Hawaiian Hololhurians 744 



74. Pseudostichopus, Scotodeiinu 744 



75. Scotodeima, La'tmogone 744 



76. Scotodeima, Pseudosticliopus 744 



77. Orphnurgus insignis. ^ 744 



78. Hawaiian Elpidiidw 744 



79. Hawaiian < 'ucumariidiv 744 



80. Oj)heodesoma, Synaptida, Thijon idium 744 



81. Hawaiian Synaptidiv 744 



82. Hawaiian Synaptidie 744 



