26 Annals of the Carnegie Museum. 



Figs. 7-S. Tricentes ? No. 1677. Fig. 7, crown view of last lower premolar and 

 first lower molar. Fig. 8, external view of mandible. X 2.25. 



Figs. 9-10. Alixodectes ? No. 1672. Portion of mandible with two molars. 

 Crown view of teeth and lateral view of specimen. X 4-5- 



Fig. II. Portion of a mandible with two premolar teeth. No. 1678. X4'5' 



Fig. 12. Enprotogotiia. No. II 64. Lower molar. X9' 



Fig. 13. Eup7-otogonia? Silberling Collection. Lower molar. X 2.25. 



Figs. I4-15-16. Calamodon. No. 1674. X ^-S- 



Figs. 17-18-I9. Pa7ttolainbda. Silberling Collection. Lower molar. X ^-S 



