CONTENTS. 



CHAPTEE XIV. 



PAGE 



Domesticated and Acclimatised Fishes, etc. . . 185 



Domesticated fishes, 185— Acclimatisation of fishes, 18S— Artificial 

 impregnation of ova, 186— Tenacity of life, 186— Reproduction 

 of lost parts, 188— Hybernation, 188— Useful fishes, 189— 

 Poisonous fishes, 189 — Poison-organs, 190. 



CHAPTEE XY. 



DiSTRreUTION OF FlSHES IN TIME . . . .193 



Oldest fish-remains, 193 — Devonian fishes, 19 i — Carboniferous, 

 196— Permian, 197— Triassic, 197— Liassic, 198— Oolitic, 199 

 — Cretaceous, 199 — Tertiary, 200 — Post-pliocene, 201. 



CHAPTEE XVI. 



The Distribution of existing Fishes over the 



Earth's Surface. — General Eemarks . .202 



Freshwater-, Marine-, and Brackish-water Fishes, 202 — Changes of 

 the habitat of numerous fishes, active, 203 — or dependent on 

 geological changes, 20i — Agencies operating upon the distri- 

 bution of Freshwater and Marine fishes, 205. 



CHAPTEE XVII. 

 The Distribution of Freshwater Fishes . . .208 



List of Freshwater Fishes, 208 — Continuous and interrupted range 

 of distribution, 209 — The ways of dispersal of Freshwater 

 fishes, 211 — A mde range of a type is not necessarily proof of 

 its antiquity, 212 — Each fauna is composed of ancient, autoch- 

 thont, and immigrant species, 213 — Division of the globe 

 into zoological regions ; freshwater fishes have been spread in 

 circumpolar zones, 215 — Cyprinidse and Siluridae, most im- 

 portant families in recognising the zoo-geographical regions, 

 216 — Division of the faunae of Freshwater fishes, 217 — I. 

 Equatorial Zone, 218 — Indian Region, 220 — African Region, 

 227 — Tropical American or Neotropical Region, 233 — Tropical 

 Pacific Region, 238—11. Northern Zone, 240— Europe- Asiatic 

 or Palaearctic Region, 243 — North American or Nearctic 

 Region, 246 — III. Southern Zone, with Tasmanian, New 

 Zealand, and Fuegian Sub-regions, 248. 



