1923 



TYPE A MMOMTES—I V 



CDXVII 



Fig. I 



Fig. la 



Fig. 2 a 



Fig. 2 



Ammonites gulielmi 



'■ South Cave. Yorkshire ; Kellaways Rock," sihceous, ironshot 



Mr. Frank Fetch Coll. ; S. 27, 40," 25, 27-5 ; 54, 39, ^^, 31-5 



Max. c. 58 ; venter runcinate, feebly bordered, no round stage 



CATASIGALOCERAS PLAXICERCLUS. xov. 

 MacrocephaUtan, Catawphalites ; Genotype, Holotvpe. Cf. CXCIV 



