Text-fig. 73 (con.). 



Semi-diagrammatic figures of the skull-roof in the various species of Metriorhynchus 

 from the Oxford Clay of Peterborough. 



A. Metriorhynchus lasve. 



B. „ leedsi. 



(j. ,, superciliosxirn . 



D. ,, moreli. 



E. Metriorhynchus cultridens. 



P. „ brachyrhynchu-s. 



G. „ durobrivense. 



2a2 



