108 FAUNA AXTIQUA SIVALENSIS. 



Figs. 15, 15 a, and 15 b. — Hippotherium Antilopinum. Symphysis of 

 lower jaw, with fragments of six incisors. — B.M. 



Length of fragment, 2 - 2 in. Breadth at anterior angles of canines, 1*6 in. 

 Length of fragments of three incisors of one side, - 95 in. 



Fig 16. — Hippotherium Antilopinum. Portion of skull, with palate. 

 Shows three true molars and third (permanent) premolar on both sides, 

 and portion of second premolar on right side.- — B.M. 



Length of three true molars, 2 - 5 in. Length of three true molars, including 

 last premolar, 3 - 36 in. Width of palate posteriorly, 2"' in. Width of palate be- 

 tween third premolars, l"9in. Length of third molar, "85 in. Breadth of ditto, 

 •75 in. Length of second molar. *8 in. Breadth of ditto, "85 in, Length of first 

 molar, 'Sin. Breadth of ditto, - 9 in. Length of third premolar, - 9 in. Breadth 

 of ditto, '9 in. 



Fig. 17. — Hippotherium Antilopinum. Portion of molar, showing 

 plication of enamel. — B.M. 



Length of fragment, *75in. Breadth, --IS in. 



Fig. 18. — Hippotherium Antilopinum. Molar, with characteristic 

 plication of the enamel, like that shown in fig. 19. 1 



Length of grinding surface, -85 in. Greatest breadth of ditto, *85 in. 



Fig. 19. — Hippotherium gracile (of Europe). Molar, with charac- 

 teristic plication of enamel. 



Greatest length of grinding surface, T03 in. Greatest breadth of ditto, '975 in. 



Plate LXXXIII. 

 Figs. 1 to 11. — Equus and Hippotherium. 

 Figs. 1, 1 a, 1 b, and 1 c. — Atlas.— B.M. 



Extreme width, 4 - 5 in. Length of inferior arch, 1*4 in. Height of spinal canal 

 anteriorly, To in. Width of ditto, 1*7 in. 



Figs. 2, 2 a, 2 b, and 2 c— Axis.— B.M. 



Extreme length of body, 4-1 in. Length of spinal platform in centre, 2 - 5 in. 

 Width across posterior articular processes, 2 - 8 in. 



Figs. 8, 3 a, 3 b, and 3 c. — Cervical vertebra. — B.M. 



Extreme length of body, 4 - 4 in. Between extremities of oblique processes, 

 4 - 5 in. Width between posterior oblique processes, 2 - 6 in. 



Figs. 4, 4 a, 4 b, and 4 c. — Cervical vertebra. — B.M. 



Extreme length between extremities of oblique processes, 4- in. Width of 

 spinal platform in centre, l - 7 in. 



Figs. 5, 5 a, 5 b, and 5 c. — Cervical vertebra. — B.M. 



Extreme length of body, 4 - 3 in. 



Figs. 6, 6 a, 6 b, and 6 c. — Dorsal vertebra.— B.M. 



Length of spine (fractured), 6'5 in. Length of body, 2-2 in. Width between 

 transverse processes, 3"8in. 



Fig. 7. — Portion of pelvis, showing acetabulum. — B.M. 

 Chord of acetabulum, 2'4 in. 



1 This specimen somewhat resembles 

 that figured by Messrs. Baker and Durand 

 in Jouru. As. Soc, vol. iv., Plate xlv., 



and described by Dr. Falconer in same 

 volume, p. 08. 



