ANOPLOTHEKIUM AND GIRAFFE. 193 



low ridge with the cusp. The anterior border of the crown 

 is formed of a similar low ridge, sweeping round to the inner 

 side of the cusp, upon which it terminates near the middle 

 of the cusp. This ridge is less developed than in A. com- 

 mune. ' 



The penultimate and antepenultimate are so like the last 

 molar that the authors deem it sufficient to refer to the 

 figures. The penultimate is the largest of the three, and 

 the antepenultimate considerably the smallest. There is in 

 all the three molars a strong development of the cusp ; 

 though, from the different stages of wearing, it shows dif- 

 ferently in the several teeth. In the back tooth it is intact 

 and has a sharp edge ; in the penultimate the pomt is just 

 worn off into a slight oblique facet ; in the antepenultimate 

 it is ground low down into a circular depressed disc, sur- 

 rounded by a ring of enamel. 



The other teeth in the specimen (Plate XVII. fig. 1) are the 

 last three false molars. What was the entire number of this 

 series, whether it extended to four, as in ^. commune, or was 

 limited to three, the specimen affords no certain indication. 

 If there was a fourth tooth (which is most probable) it must 

 have been in a rudimentary or reduced state, as in the rhi- 

 noceros, and must have been disconnected from the rest of 

 the series by being placed somewhat forwards in a diasteme ; 

 for no indication is obtained, from the appearance of the 

 anterior tooth, or from the remains of any alveolus, that 

 there was another tooth close in front of the sixth. These 

 three _ premolars, taken in succession from rear to front, 

 diminish rapidly in size ; and in the aggregate are much 

 shorter than the same three teeth in ^. commune, the joint 

 length in the Sewalik fossil being 1-8 inch, whereas in the 

 smaller jaw of A. commune it is 2-3 inches. In the latter, as 

 is the case in the Euminants, the anterior premolars are 

 narrow and elongated ; in the Sewalik fossil they are short 

 and wide. This general condensation of the premolars adds 

 to the probability of the existence of a vacant diasteme. All 

 the premolars exhibit, in a well-developed form, the charac- 

 teristic cusp. The posterior two have their outer surface flat 

 or slightly convex ; and they contract inwards towards the 

 cusp in a sub-cuneiform shape, the cusp and inner side being 

 bounded by a low basal ridge. 



' MS. Note hy Br. Falconer.—' This 

 low anterior ridge corresponds with the 

 anterior inner crescent of Anop. com- 

 mune. In the latter species, while the 

 other three crescents are as perfectly 

 developed as in the ruminants, the an- 

 terior inner lobe has only the front horn 



VOL. I. O 



of the crescent, and never shows more 

 than a narrow strip of ivory by wear. 

 The reduction, which begins in Anop. 

 commune, is carried still further in the 

 Sewalik species ; a rudiment of the lobe 

 only appearing, while the conical tuber- 

 cle is proportionally increased.' — [Ed.] 



