LEG AI IOI 
ROEMEROCERAS, PARATISSOTIA. 
TGS ISP ROCMEROCERGSYG CLD Un selay Utter yas se ates ee 
Figs. 1, 2. Natural size. 
3. Enlarged suture. Coll. Acad. Nat. Sci. Philadelphia. 
Quebrada de Colpamayo, Peru; Upper Cretaceous; all after Gabb. 
EGS 4G el OTERO GENASRSLUD DLANILUTI Lay eUU Umer ei te se erates eer 
Figs. 4, 5. Natural size. 
6. Suture, x 2. 
Cajamarca, Peru; Upper Cretaceous; my collection. 
Inicekee Fill, JRemoidasaneaarnee, (WKN) sosatesoscconcocsosceessabasecconscsscuccseesce 
Figs. 7, 8. Natural size. 
9. Fig. 8 enlarged. 
10. Center of fig. 8 enlarged to show section of young and solid keel. 
11. Lateral and dorsal suture of fig. 7 above the break. 
Cachiyacu, Peru; Upper Cretaceous (Senonian?); my collection. 
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