PLATE XLII. 



Page. 

 PRiONOTRons woolgari Mantell 174 



Fig. 1, 2. Two views of a small specimen (after Meek). 



3. Peripheral view of a fragment of a large individual (after Meek). 



4. Septum of a small specimen, magnified (after Meek). 



Prionotropis hyatti n. sp 176 



Nat. Mus. Cat. Invert. Foss., 22941. 

 Fig. 5, 6. Two views of a specimen of average size. 



7. Side view of a smaller example. 



8. Septum of a small specimen, magnified. 



276 



