PIG APD) SC WEIL: 
Kyemiceras, ENGONOCERAS, PROTENGONOCERAS. 
Page. 
WrGs: 123 Kenerucencisy aD bu ely atti eee sete ete ee ete ate ae Ic 152 
Figs. 1, 2. Natural size. (After Gabb. ) 
3. Lateral suture enlarged. (After Gabb.) 
Quebrada de Huari, Peru; Cenomanian? 
Fras. 4,5. Engonoceras belviderense (Cetin) conc couassecccosdssessso near scons a scqosssaassssoc 158 
Figs. 4, 5. Lateral and ventral views. 
Belvidere, Kans.; Washita epoch; Coll. Cragin, Colorado College. 
Fies. 6-9. Protengonoceras planum Hyatt -.--.----------= +--+ = 2 =< 922252 156 
Figs. 6, 7. Lateral and ventral views, X 2: 
8. Lateral suture, X 2; the auxiliary saddles Nos. 8 to 10 should be a trifle 
broader. 
9. Dorsal suture of the same age, X 2. 
Texas, my collection. 
