XXI 



Page 

 55. Ceratodus forsteri in various positions at the time of its coming 



to the surface to breathe 177 



66. A ventral scale of Ch-ympelea ornata Shaw 228 



57. Diagrammatic transverse sections of the body of Chrysopeka 



ornata 229 



68. Skull of Ursus arctos shanorum, lateral view 231 



69. a, skull, and b, last lower molar of Ursits arctos shanorum .... 232 



60. Front and side views of skull of Cercopithecus patas bearing- 



supernumerary premolars 233 



61. Lepidosis of the front of the left forearm of Cnemidoplwj'us 



inexicanus 280 



62. Lepidosis of the under surface of the left forearm of Cnemido- 



j)horus iinmutahilis, &c 281 



63. Lepidosis of the under surface of the forearm of Cneinidophorus 



mexicamcs 282 



64. Lepidosis of the coUar and throat of Cnemidophorus tessellatus, 



&c 283 



65. Lepidosis of the collar and throat of Cnemidophorus immutabiHs, 



&c 284 



66. Evolution of Pattern of Cnemidophorus deppei, from 6 to 11 pale 



stripes 290 



67. Evolution of Pattern of Cnemidophorus immutabilis A to E, and 



of C. guttatus from youth F to old age I 291 



68. Evolution of Pattern of Cnemidophorus scalaris from youth to 



adult 291 



69. Evolution of Pattern of Cnemidophorus commimis from A to D 



and of C. mexicanus from A to D' 292 



70. Evolution of Pattern of Cnemidophorus tessellatus A to D and of 



C. rubidus E 293 



71. Cnemidophorus sexlineatus and C. dejipei 303 



72. Cnemidophorus deppei 311 



73. Cnemidop)horus sexlineatus and C. deppei 315 



74. Cnemidophorus immutahilis 323 



75. Cnemidophorus immutabilis and C. yuttatus 324 



76. Cnemidophorus scalaris 33G 



77. Cnemidophorus communis occidentalis 344 



78. Cnemidojjhorus communis 347 



79. Cnemidophorus communis occidentalis and C. c. australis 353 



80. Cnemidophorus bocourti from Oaxaca . 357 



81. Cnemidophorus mexicanus typicus, C. m. balsas, and C. immuta- 



bilis 359 



82. Cnemidophorus mexicanus typicus 361 



83. Cnemidophorus mexicanus var. balsas 364 



84. Portion of ventral surface of Trachysaurus ruyosus 376 



85. Sinularia fungoides, sp. n ^ 417 



Proc. Zool. Soc. — 1906, Yol I. 



