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LIST OF ILLUSTRATIONS IN THE TEXT 



MARINE MAMMALS 



FlG. 41. The Patagonian Sea-lion (Otaria jubata) 



42. The Atlantic Walrus {Trichechus rosmarus) 



43. The Common Seal {Phoca vitulina) 



44. The Manatee (Manatus americanus) . 



45. The Dugong (Halicore dugong) . 



46. The Right Whale (Bakena mysttcetus) 



47. The Sperm Whale (Physeter macrocep>halus) 



48. The See-see (Platanista gangetica) 



49. The Common Dolphin (Delphinus delphis) . 



50. The Beluga (Delphinapterus leucas) 



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