LIST OF CUTS IN THE TEXT. 



Ortiioceras elegans, Apex and Protoconch Figures 1-5, page 10 



Orthoceras politum, Apex and Protoconch " G-8, " 10 



Ortiioceras truncatum, Truncated End and Plug " 9-12, " 11 



Orthoceras ungins. Cicatrix and Apex " 18-17, " 11 



Orthoceras politum. Apex " IS, 19, " 11 



W-ehnerockras Emmrichi " 20-22, " 127 



Caloceras aplaxaitm " 23, 24. '• 147 



Caloceras Xkwberryi " 25-27, " 152 



Caloceras Ortoni " 28-30, " 153 



A.RNIOCERAS Nkvadanum " 31-33, " 173 



Asteroceras obtusum, Yak. quadragonatum "34.35, " 205 



