1927 



TYPE AMMONITES— VII 



DCCXLVIU 



x 045 



" Ammonites " variocostatus 



" Sharnbrook, Bedford ; Oxford Clay " (Ampthill Clay) 



S.B., ex Dr. T. Wright, Coll. 4735 ; has 3/'8ths body-chamber 



S. J 39> 3*> 36, 45 ; 216, 28, 37, 51 ; 271, 30, 33, 52 ; max. c. 375 



DICHOTOMOCERAS STRUMATUM, nov. 

 Prionodoceratan, dichotomum ; Holotype. See CXXXIX 



