ELEPHANTIDJ3. 19 



17418. The fourth right upper milk-molar ; from Missouri. Both 

 in this and the preceding specimen the third ridge is more 

 worn than the first. Purchased. About 1844. 



17389. The first left upper true molar j from Missouri. 



Purchased. About 1844. 



17332. The first left upper true molar, well worn; from Missouri. 



Purchased. About 1844. 



17391. The first left upper true molar; from Missouri, The third 

 ridge is more worn than the first. 



Purchased. About 1844. 



17438. The first right upper true molar, almost unworn; from 

 Missouri. Purchased. About 1844. 



17331. The first right upper true molar ; from Missouri. 



Purchased. About 1844. 



17341. The much-worn first right upper true molar ; from Mis- 

 souri. Purchased. About 1844. 



17388. The germ of the second right upper true molar ; from Mis- 

 souri. Purchased. About 1844. 



335. The germ of the second right upper true molar ; from " Big- 



Bone-Lick." Purchased. About 1836. 



17387. The second right upper true molar, with the summit of the 

 first ridge slightly abraded. Purchased. About 1844. 



17333. The second right upper true molar, with the first and second 



ridges worn ; from Missouri. Purchased. About 1844. 



17417- The second right upper true molar, with all the ridges worn ; 

 from Missouri. Purchased. About 1844. 



336. The second right upper true molar, in a more worn condition ; 



from " Big-Bone-Lick." Purchased. About 1836. 



M. 380. The second right upper true molar, in a similar stage of 

 wear ; from " Big-Bone-Lick." 



Egerton Collection. Purchased, 1882. 



7439. The second right upper true molar, in a similar stage of 

 wear ; from " Big-Bone-Lick." 



Mantell Collection. Purchased, 1836. 

 c2 



