LIST OF PLATES. 



Plate XII. (between p. 130 and p. 131). The Australian Mud- 

 fish ( Ceratodm Fosteri) ... ... ... Explanation 118 



Plate XIII. (betw.een p. 130 and p. 131). The Mexican Axolotl 

 (Siredon piscj/ovviis) and the European Land-salamander 

 (Salamandra inaculata) ... ... ... Explanation 129 



Plate XIV. (between p. 180 and p. 181). Four Catarhines 



(Chimpanzee, Gorilla, Orang, Negro) ... Explanation 181 



Plate XV. (between p. 188 and p. 189). Pedigree of Man 



Explanation 184 



