PAL/EONTOGRAPHICAL SOCI ETY, I 9 1 1 . 



A. S.Woodward, English Chalk Fishes. 



3 



Pl.XLVII. 



A.H.Searle del.et litn. 



West, Newman irrrp. 



1-6. Notidamxs. 7-12. Squatina. 13-27. Ptychodus. 



