DESCRIPTION OF PLATES. 105 



Figs. 2, 2 a, and 2 b. — Equus Sivalensis. Fragment comprising 

 posterior portion of skull, broken off in front in a line with anterior 

 angles of zygomatic arches. Shows occipital foramen, crest, condyles, 

 and posterior roots of zygomata. — B.M. 



Length of fragment, 7'0 in. Height of occipital facet from lower border of 

 occipital foramen to summit of occipital crest, 4 - 8 in. Between inferior angles of 

 occipital crest, 4*7 in. Breadth of cranium between roots of zygomata, 3*7 in. 

 Length of ridge of occipital condyle, 1*7 in. Height of condyle (greatest), 2 - l in. 

 Between inner margins of condyles, 1*5 in. Height of occipital foramen, T6 in. 



Fig. 3. — Equus Sivalensis. Fragment of tipper jaw, with whole 

 series of six molars. — B.M. 



Length of fragment, 9'3in. Height of fragment (length of molar), 4' 1 in. 

 Length of molar series, 7'7 in. Length of three true molars, 3 - 4 in. Breadth of 

 alveoli, 1*3 in. 



Fig. 4. — Equus Sivalensis. Fragment of horizontal ramus of lower 

 jaw with whole series of six molars. — B.M. 



Length of fragment, IT in. Depth of jaw at anterior border of fourth premo- 

 lar, 3-6 in. "Width of ditto, l - 2in. Length of molar series, 7"8in. Length of 

 three true molars, 3'7 in. 



Figs. 5, 5 a, 5 b, and 5 c. — Equus Namadicus (Falc. and Caut.), 

 from the Nerbudda Valley. The occipital condyles and foramen and 

 the left zygomatic arch are very perfect ; also the whole series of six 

 molars on left side. . The specimen is broken off in front of first 

 (permanent) premolar on left side ; from this the line of fracture passes 

 obliquely across the palate and through the middle of the hindmost 

 right premolar. The three right true, molars are present. The right 

 zygomatic arch is absent. — B.M. 



Extreme length of fragment, 17'6 in. Prom lower border of occipital foramen 

 to posterior border of palate, 9'6 in. Greatest breadth of cranium at roots of zy- 

 gomatic processes, 4 - 4 in. Between extreme points of zygomata, 7'9 in. Between 

 anterior angles of orbits, 6 - in. Height of cranium from palate at fractured 

 extremity, 3 - 6 in. Great diameter of orbit, 2 - 8 in. Lesser diameter of orbit, 

 l - 8 in. Height of occipital facet from lower border of occipital foramen, 4 - 2 in, 

 Between inferior angles of occipital facet, 4-1 in. Depth of zygomatic fossa, l - 7 in. 

 Width of palatine notch, l - 7 in. Width of palate posteriorly, 3* in. Width of 

 palate anteriorly, 2 - 7 in. Width of alveoli, l'lin. Length of molar series, 7' in. 

 Length of true molars, 3 - 3 in. 



Fig. 6. — Equus Namadicus. Fragment of left upper jaw comprising 

 whole molar series. — B.M. 



Length of fragment, 9'2 in. Length of molar series, 7' in. Length of three 

 true molars, 3 - 2 in. Breadth of alveoli, 1/2 in. 



Fig. 7. — Equus Namadicus. Fragment of left lower jaw with entire 

 molar series. The fracture exposes the fang of the last true molar. — 

 B.M. 



Length of fragment, 12' 7 in. Depth of jaw at anterior border of fourth pre- 

 molar, 3 - 8 in. Width, 1'2 in. Length of molar series, 8' in. Length of three 

 true molars, 38 in. 



Plate LXXXII. 



Fig. 1. — Equus Sivalensis. Upper jaw, right side, with entire molar 

 series. — B.M. 



Length of third molar, 1*16 in. Breadth of ditto, l - 03 in. Length of second 

 molar, 1*16 in. Breadth of ditto, 1*2 in. Length of first molar, 1'16 in. Breadth 



