XIV 



LIST OF FIGURES 



FIG. PAGE 



122. Skeleton of lung-fish . . . 119 

 1 22 A. Jaws and skull of Protop- 



terus 1 20 



123. Dipterus 121 



124. Derm bones of head of Dip- 



terus 121 



125. 125 A. Jaws of Dipterus . . 121 



126. Phaneropleuron . . . .122 



127. Ceratodus 123 



128. Skeleton of Ceratodus . . 123 



1 28 A. Skull of Ceratodus . . .124 



129. Lepidosiren 125 



1 29 A. Protopterus 126 



130. Coccosteus 131 



131. Coccosteus, dorsal view . .132 



132. Coccosteus, ventral . . .132 



133. Dinichthys 133 



134-137. Dinichthys, dorsal view 134 

 138-144. Mandibles of Arthrodi- 



rans 137 



145. General anatomy of Teleost 140 



146. Skeleton of Teleost . . . 142 



147. Skeleton of Ganoid . . . 144 



148. Polypterus 148 



149. Polypterus, head of young . 148 



150. Calamoichthys 150 



151. Gyroptychius 151 



152. Osteolepis 151 



153. Holoptychius 151 



154. Eusthenopteron . . . .152 



155. Ccelacanthus 153 



156. Diplurus 154 



1 56 A. Undina 154 



157. Lepidosteus 155 



158. Elonichthys 156 



159. Eurynotus ...... 156 



1 60. Cheirodus 157 



161. Semionotus 157 



162. Aspidorhynchus . . . .158 



163. Microdon 158 



164. Palseoniscus 159 



165. Acipenser 160 



165 A. Chondrosteus .... 161 



1 66. Scaphirhynchus . . . .162 



FIG. PAGE 



1 66 A. Psephurus 162 



i66B. Polyodon 163 



167. Amia 163 



168. Amia, gular region . . . 164 



169. Caturus 164 



170. Leptolepis 165 



171. Megalurus 165 



171 A. Phylogeny of the Teleo- 



stomes 1 66 



172-174. Deep-sea fishes . . .168 



175. Fierasfer 169 



176. Carassius 170 



177. Amiurus 171 



178. Callichthys 172 



179. Mormyrus 172 



I So. Anguilla 173 



181. Perca 173 



182. Gadus 174 



183. Pseudopleuronectes . . -175 



184. Chilomycterus 176 



1 84 A. Lagocephalus . . . .176 



185. Hippocampus 177 



1 85 A. Syngnathus 178 



186-199. 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 



