No. 379.] DEVONIAN PTYCTODONTID. 483 
Sg ant i ANS ete 
Fics. 36-40. — Ptycto dus fero. 
Fig. 
ox, Sp. nov. 
42. — Rhynchodus major, sp. nov. Fig. 43. 
Figs. 41, 44- ie a aeea ron, , nov. 
sp. no 
