154 Lepidosirens. 



a fresh supply of air, a habit which cannot escape 

 the notice of anyone watching those in the Keptile 

 House. The Australian Ceratodus, on the con- 

 trary^ is believed to go out among the reeds and 

 rushes on the flats which are left uncovered by the 

 tide. Lepidosirens attain a length of from three 

 to six feet ; they are carnivorous, feeding on frogs, 

 fishes, and other aquatic animals. The specimens 

 in the Zoo, however, are small, averaging about a 

 foot in length, and are fed on small fishes. 



