1922 



TYPE AMMOXITES—IV 



CCCXXIX 



Fig. la 

 Xi-7 



Fie. 2 



Fig. 1 



Perisphinctes subbakeri.e 



South Cave, S. Yorkshire : Kellaways Rock, siUceous, ironshot 



Mr. Frank Fetch Coll. ; S. 44-5, 36, 28, 36 ; 40 ribs 



S. 63, 35-5, 27, 30-5 ; 38 ribs ; 82, 35, 26-5, 38 ; ^^ ribs ; max. c. 95 



AXAPLANULITES DIFFICILIS, nov. 

 Macrocephalitan, Cataccphalitcs ; Genotype, Holotype. Cf. CCCXXVIII 



