338 



F. H. EDGEWORTH 



Text-fig. 12. 



1 6rcuicJi.fn.pL% 



z^-^gUi 



] brcuvch. 

 bar 



\ 2 binrLchm pi. 



^^Ul cle/h 



—'TgiUclert 



.^ ^j — Z branch . in pi. 



t brcuicJi. m pi. 



Ceratohyal 



Text-fig. 13. 



g petros , 



'It 



M 



/ / 





%i r^. 



^-Hi: J \W ^ 



^ ^-2 bnxncA. 



perLOouxL. 



Ceraloh^cd (^[^ f' branch, rrupt. 



