378 PROFESSOR OWEN ON THE GENUS DINORNIS. 



Fig. 4. Back view of the skull of Porphyria Sultana. 



5. Under view of lower jaw. 



6. Upper view of lower jaw. 



7. Side view of skull, with lost parts restored in outhne, of Notornis Mantelli. 



8. Upper view of ditto. 



9. Under view of ditto. 



10. Back view of ditto. 



1 1 . Interior of cranium of ditto. 



12. Under view of lower jaw. 



13. Upper view of ditto. 



The homologous bones and parts are indicated by the same numbers or letters in 

 each figure, and are explained and referred to in the text. 



