6 14 Subclass Dipneusti, or Lung-fishes 



India, Ceratodus latissimus, figured 

 by Agassiz in 1838, being the best- 

 known species. 



The abundance of the fossil teeth 

 of Ceratodus renders the discovery of 

 a living representative of the same 

 type a matter of great interest. 



In 1870 the Barramunda of the 

 rivers of Queensland was described 



Fio. 383. Teeth of Ceratodus runcinatus Plie- 

 ninger. Carboniferous. (After Zittel.) 



by Krefft, who recognized its rela- 

 tionship to Ceratodus and gave it the 

 name of Ceratodus forsteri. Later, 

 generic differences were noticed, and 

 it was separated as a distinct group 

 by Castelnau in 1876, under the name 

 of Neoceratodus (later called Epicera- 

 todus by Teller) . Neoceratodus forsteri 

 and a second species, Neoceratodus mio- 

 lepis, have been since very fully dis- 

 cussed by Dr. Giinther and Dr. Krefft. 



PIG. 385. Archipterygium of Neoceratodus 

 forsteri Giinther. 



