E. (LOXODON) MEKIDIONALIS. 135 



side, composed of eight principal ridges, with front and back 

 talons. The six anterior ridges are worn. The discs of the 

 first three ridges are wide and open, but irregularly indented, 

 with a tendency to mesial expansion, and surrounded by 

 margins of thick enamel, which is vertically channeled ex- 

 ternally and slightly crimped ; the posterior ridges show the 

 apices of six or seven digitations ; the interspaces filled with 

 cement between the ridges are open, and the ridges are well 

 apart. 



The dimensions are : — 



Length of crown, 5-3 in. Width in front, 1-6 in. "Width behind, 23 in. Height 

 of the seventh plate, 2 - 5 in. 



One of the distinctive characters of the species, namely, the 

 low height of the crown in reference to the breadth, is well 

 exhibited. The specimen is dark-coloured and heavy, from 

 ferruginous infiltration. It was discovered at Mundesley, 

 and belonged to Mr. S. Woodward (Norwich Museum). 



Another left lower antepenultimate true molar of a larger 

 individual, and more advanced in wear, is represented by 

 figs. 6 and 6 a. The crown presents a front talon and eight 

 ridges, all of them worn ; the discs are wide and open, and 

 the vallicular interspaces are also wide ; the enamel-edges are 

 thick, and in some of the plates disposed to slight crimping, 

 with irregular angular expansion. The annular discs of the 

 seventh ridge are of large size. This tooth bears the large 

 anterior fang. It is a very characteristic specimen of E. 

 meridionalis. 



The dimensions are : — ■ 



Length of crown, 55 in. Width of crown at second ridge, 2-2 in. Width of 

 crown behind, 265 in. Height of crown at seventh ridge, barely worn, 2-0 in. 



The specimen is hard, heavy, and dark-coloured, and is 

 marked as having come from Mundesley (Norwich Museum). 



Figs. 7 and 7 a represent a fragment, comprising the an- 

 terior two-thirds of the penultimate or second true molar of 

 the lower jaw, right side. It includes seven worn ridges. 

 The discs of wear are wide, and separated by broad bands of 

 cement ; the rings of the digitations are large ; the plates of 

 enamel are thick, with angular flexures and deep channeling 

 on the outer surface, but free from crimping. The specimen 

 is black and heavy, and bears patches of marine incrustation. 



The dimensions are : — 



Extreme length, 5-2 in. Width of crown at second ridge, 23 in. Width of 

 crown at seventh ridge, 2-9 in. 



No note was taken of the height of the last ridge. The 

 specimen is without fangs, and, although distinctly of E. 

 meridionalis, the number of ridges to the entire crown is not 



