EQUID^E. 187 



the princijjal difference being that the height of the diastemal portion 

 is greater in the fossil. 



The folloiving are the principal dimensions. 



Extreme length of the fragment .... 13'6 



Depth of jaw behind the last molar . . . . 6'1 



Ditto in the middle ....... 3'8 



Ditto at commencement of diastema .... 2-6 



Length of 6 molars 7"1 



Length of diastemal portion ..... 2'3 



No. 304. Equus Sivalensis. — Lower half of left femur, attached by 

 the anterior surface longitudinally to the shaft of the humerus of the 

 rhinoceros, No. o02. (See page 170.) Shows a portion of the shaft, both 

 condyles, the rotular pulley and the characteristic pit on the shaft above 

 the outer condyle. Probably belonged to the same animal as the jaw. 



No. 305. Eqmis Sivalensis. — Fragment comprising the symphysial 

 portion of the inferior maxilla, broken oft" on the right side close to 

 the symphysis, the greater part of the diastema remaining on the left, 

 presenting the six incisor teeth in situ of a young adult (say five or six 

 years old) the permanent teeth being all out ; and the bases of the cups 

 of the central incisors not yet worn off, the middle ones being large ; 

 unluckily the crowns of all these teeth have been more or less injured 

 by attrition, and the form of the outer incisors is not seen, except that 

 there is a rather deep vertical groove upon the inner and posterior sur- 

 face of the outermost differing from what is seen in the English horse. 

 A shallow vertical furrow is also seen upon the outer surface of the two 

 outer incisors. The size of the specimen corresponds very closely with 

 thatof the samepartsin the English horse cranium compared with No. 303. 



No. 306. Equus Sivalensis. — Lower end of femur, right side, show- 

 ing the condyles and articular surfaces nearly entire, with a small part 

 of the shaft attached. The condyles are qiiite entire,, and the inner 

 border of the rotular pulley presents the characteristic large salient j^ro- 

 jection. 



No. 307. Equus Sivalensis. — Fine fragment comprising part of the 

 horizontal ramus right side, 'broken off immediately behind the last 

 molar and in front through the posterior half of the third premolar ; 

 showing three entire teeth, and part of a fourth, viz. the tliree true molars 

 and last premolar ; the last molar is only partially worn, showing the 

 animal to have been a young adult. The size and pattern of the crown 

 agree very closely with the specimen No. 303. The fossil is black, 

 hard, and heavy, and the teeth finely preserved. The large flexures of 

 the enamel plates well shown. 



No. 315. Hippotherium Antilopinum. — Lower end of radius, right 

 side. 



No. 316. Hippotherium Antilopinum. — Fragment comprising the 

 carpus, left fore-leg, and metacarpals united in the natural manner, the 

 metacarpus broken about the middle of the shaft ; the upper part of 

 the lateral metacarpals shown. Of small size. 



No. 369. Equus Sivalensis. — Lower end of right humerus, showing 

 only the articulating head somewhat crushed, and therefore doubtfully 

 determined, but in the absence of the third piilley agreeing with Horse. 



