1912 AMMONITES CEREUS 49c 



Comparable Species 



Am. planicosta ; Dumortier, 1867, (II), xxv, 1-3. 



Am. vesta, Reynes, 1879, xlv, 47-49, copy of Dumortier as above. 



Am. Samuel, Id., xlv, 25-27. 



.im. raricostatus ; Quenstedt, 1884, .xxiv. i. 



And see No. 19. 



