Geol. Mag. 19()9. 



Platk III. 



X 10 



2 



xlO 



3 



X 10 



•20 



5 



x2 



E. H. Thomas del. 



PlQS. 1-4:.— Phacops {TrimeroGephahcs) pentops, sp. nov. 

 ^^ 5^ 6. — Allorisma concinna, sp. nov. 



Devonian : Portquin Harbour, Cornwall. 



