DESCKIPTION OF PLATES. 527 



Fig. 7. — Equus Namadicus, from the Nerbiidda. Fragment of upper 

 jaw, right side, with entire molar series. — B.M. 



Length of molar series, 7'05 in. Length of three true molars, 3'2 in. Length 

 of third molar, Tloin. Breadth of ditto, -9 in. Length of second molar, 1-05 in. 

 Breadth of ditto, I'l in. Length of first molar, '96 in. Breadth of ditto, 1-05 in. 

 Length of third premolar, rioin. Breadth of ditto, ri5in. Length of second 

 premolar, 1-16 in. Breadth of ditto, 1-1 in. Length of first premolar, 1-55 in. 

 Breadth of ditto, 1-0 in. 



Fig. 8. — JEqvtis Nmnadicus. Fragment of lower jaw, left side, with 

 entire molar series. — B.M. 



Length of molar series, 7'93 in. Length of three true molars, 376 in. Length 

 of third molar, 1-2 in. Breadth of ditto, 'Sin. Length of second molar, 1-2 in. 

 Breadth of ditto, -66 in. Length of first molar, 1-25 in. Breadth of ditto, -7 in. 

 Length of third premolar, 1-2 in. Breadth of ditto, '7 in. Length of second pre- 

 molar, 1-3 in. Breadth of ditto, '73 in. Length of first premolar, 1'65 in. Breadth 

 of ditto, -66 in. 



Figs. 9, 9 a, and 9 h. — Equus Palceonus (Falc. and Cant.), from 

 the Nerbudda. Fragment of anterior portion of palate, Avith six in- 

 cisors and two small canines. Presented by C. Frazer, Esq.-— B.M. 



Between inner alveolar margins of canines, 1-lin. Diastema between canine 

 and external incisor, -Sin. Between posterior angles of external incisors, 1-7 in. 

 Length of three incisors of one side, 1-6 in. Length of external incisor, -6 in. Length 

 of middle ditto, '65 in. Length of internal ditto, -56 in. Length of alveolus of 

 canine on left side, -4 in. Breath of ditto, "3 in. 



Figs. 10, 10 a, and 10 b. — Equus PalcEomis. Fragment of anterior 

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



Breadth across posterior margin of external incisive alveolus of left side, 

 2'4in. Length of three incisors of one side, l'45in. Length of broken end of 

 external incisor, '45 in. Length of crown of middle incisor, -5 in. Length of 

 crown of internal ditto, "4 in. 



Figs. 11 and 11 a. — Equus Palceonus. Fragment of lower jaw, right 

 side, milk dentition. — B.M. (See antea, p. 186, note.) 



Length of third milk molar, grinding surface, l'3iu. Breadth of ditto, '36 in. 

 Length of second milk molar, grinding surface, 1-loin. Breadth of ditto, -410. 

 Length of first milk molar, grinding surface, 1 '2 in. Breadth of ditto, '4 in. 



Figs. 12, 12 a, and 12 b. — Fossil Equus, from the Irrawaddi. Frag- 

 ment of lower jaw, comprising symphysis and six incisors. — B.M. 



Length of fragment, 4-4 in. Between external angles of external incisors, 2'4 in. 

 Length of three incisive alveoli of one side, 1'5 in. 



Fig. 13. — Hippotherimn AntUopinum (Falc. and Cant.), from the 

 Sewalik hills. Fragment of iipper jaw, left side, with entire series of 

 six molars. — B.M. (See antea, p. 186.) 



Length of molar series, 5-3 in. Length of three true molars, 2-36 in. Length 

 of third molar, 'Sin. Breadth of ditto, 'SS in. Length of second molar, "85 in. 

 Breadth of ditto, '76 in. Length of first molar, '8 in. Breadth of ditto, 'SS in. 

 Length of third premolar, -93 in. Breadth of ditto, '86 in. Length of second pre- 

 molar, '96 in. Breadth of ditto, '95 in. Length of first premolar, 1-25 in. 

 Breadth of ditto, '83 in. Height of second premolar, 2"15 in. Height of first pre- 

 molar to origin of fangs, 1'4 in. 



Fig. 14. — Hi ppotherium AntUopinum. Fragment of lower jaw, right 

 side, with three premolars and portion of first true molar. — B.M. 



Length of three premolars, 3-1 in. Length of three premolars and first molar (frag- 

 ment), 4'1 in. Eemaining portion of diastema, I'B in. Length of first molar 

 (fragment), '8 in. Breadth of ditto, '55 in. Length of third premolar, '96 in. 

 Breadth of ditto, -6 in. Length of second premolar, -96 in. Breadth of ditto, 

 •55 in. Length of first premolar. 1 '05 in. Breadth of ditto, -5 in. 



