THE 



SIRENOID GANOIDS, 



WITH A DESCRIPTION OF THE 



BRITISH FOSSIL TEETH OF CERATODUS. 



BY 



L. C. MIALL, E.R.S., 



PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF LEEDS. 



LONDON: 



PRINTED FOR THE PAL^IONTOGRAPHICAL SOCIETY. 

 1878—1907. 



