192. 



TYPE AM MOM IKS -IV 



CCCLIII A 



Ammonites triplicatus 



Barrel Hill, Long Crendon, Bucks ; Well-sinking ; Lydite Bed 

 S.B. Coll. 3362 ; S. 100, 26-5, 34-5. 4q ; 149, 24-5, 33, 53 

 Max. 255 ; 45 ribs ; EL, 57, Li, 49, L2, 26 at 2b"5 mm. 



EL, 69, Li, 53, L2. 35 per cent, at 32 mm. breadth of whorl 



LYDISTRATLFES LYDITICIS. nov. 

 Paravirgatitan, lyditiciis ; Genotype, Holotype. Cf. CCC\'II 



