XIV 



LIST OF FIGURES 



FIG. PAGE 



22. Skeleton of lung-fish . . .119 

 22 A. Jaws and skull of Protop- 



terus 120 



23. Dipterus 121 



24. Derm bones of head of Dip- 



terus 121 



25. 125 A. Jaws of Dipterus . . 121 



26. Phaneropleuron . . . .122 



27. Ceratodus 123 



28. Skeleton of Ceratodus . .123 



28 A. Skull of Ceratodus . . .124 



29. Lepidosiren 125 



29 A. Protopterus 126 



30. Coccosteus 131 



31. Coccosteus, dorsal view . .132 



32. Coccosteus, ventral . . .132 



2)'^. Dinichthys 133 



34-137. Dinichthys, dorsal view 134 

 38-144. Mandibles of Arthrodi- 



rans 137 



General anatomy of Teleost 140 



45 



46. Skeleton of Teleost 



47. Skeleton of Ganoid 



48. Polypterus . . . 



49. Polypterus, head of young 



50. Calamoichthys 



51. Gyroptychius 



52. Osteolepis . 



53. Holoptychius 



54. Eusthenopteron 



55. Coelacanthus 



56. Diplurus 

 56 A. Undina 



57. Lepidosteus 



58. Elonichthys 



59. Eurynotus . 



60. Cheirodus . 



61. Semionotus 



62. Aspidorhynchus 



63. ^licrodon 



64. Palaeoniscus 



65. Acipenser 

 65 A. Chondrosteus 



66. Scaphirhynchus 



142 

 144 

 148 

 148 

 150 

 151 



151 

 152 

 153 



154 



154 



155 

 156 



156 



157 



157 

 158 



158 



159 

 160 



161 



162 



FIG. PAGE 



66 a. Psephurus 162 



66 b. Polyodon 163 



67. Amia 163 



68. Amia, gular region . . . 164 



69. Caturus 164 



70. Leptolepis 165 



71. Megalurus 165 



71 A. Phylogeny of the Teleo- 



stomes 166 



72-174. Deep-sea fishes . . .168 



75. Fierasfer 169 



76. Carassms 170 



77. Amiurus 171 



78. Callichthys 172 



79. Mormyrus 172 



80. Anguilla 173 



81. Perca 173 



82. Gadus 174 



83. Pseudopleuronectes . . -175 



84. Chilomycterus 176 



84 A. Lagocephalus . . . .176 



85. Hippocampus 177 



85 A. Syngnathus 178 



86-199. Eggs of fishes . . . 181 



200-215. Development of lam- 

 prey 189 



216-230. Development of shark . 194 

 231-248. Development of lung- 

 fish 199, 201 



249-268. Development of Ganoid 203 

 269-283. Development of Teleost 208 

 284-289. Larval sharks . . .216 

 290-295. Larval lung-fishes . .219 

 296-302. Larval sturgeons . . . 222 

 303-309. Larval Teleosts . . . 224 

 310-315. Skulls, jaws, and bran- 

 chial arches .... 254 

 316-325. Heart and conus arte- 

 riosus 258 



326-331. Digestive tracts . . . 262 

 332-337. Urinogenital ducts and 



openings 267 



338. Blood-vessels of shark . . 268 

 339-344. Brain 272 



