DESCRIPTION OF PLATE X. 



Elephas (Euelephas) Columbi and Elephas (Euelephas) 



Armeniacus. 



The figures in this Plate have been copied from drawings 

 by Mr. Dinkel, which appeared in the ' Natural History 

 Eeview ' for 1863, Plates I. & II. 



Fig. 1. Elephas Columbi. Section of the middle portion of an adult 

 lower molar, from the Post-Pliocene deposit of the Brunswick 

 Canal, near Darien, in Georgia, one-half of the natural size ; 

 showing the disposition and relative proportions of the ivory, 

 enamel, and cement, as compared with corresponding sections of 

 E. Tndicus and E. primigenius, contained in the Fauna Antiqua 

 Sivalensis, and in Plate V. of vol. i. (See page 222.) 



Fig. 2. Elephas Columbi. Represents the crown aspect of an ante- 

 penultimate true molar, of the lower jaw, left side (m. 1), one- 

 half of the natural size. No. 741 a, Mus. Coll. of Surg. The 

 eight anterior ridges are worn, the rest being intact. From 

 Mexico. (See page 220.) 



Fig. 3. Elephas Armeniacus. Represents the crown aspect of the last 

 true molar (m. 3), upper jaw, left side, of E. Armeniacus, from 

 a specimen in the British Museum, No. 32,250, procured by 

 Col. Giels, in the province of Erzeroum in Armenia. One-half 

 of the natural size. (See page 247.) 



