1906.] 



AUSTRALIAN LUNG-FISH. 



175 



less active and sinks to the bottom, a movement which suggests 

 very closely one often observed in Nectnrus. The paired fins extend 



Text-fig. 54. 



Ceratodus forsteri in various positions of rest and movement.. 



straight out at the sides of the body, the pectorals moving azilj, 

 as though to balance the fish during its descent. A somewhat 



