-ans.Roy. Soc. Edin. 



Vol. LI- Plate VII 



Ashworbh and Ritchie: Dicoryne. 



Spd. 



Ect. —4 



Spd. 



End. \^f? 



End. 



Spd 



Ect. 



J Ritchie del 



M c Fa.rlane JtErskne. Lith Earn 



