DESCRIPTION OF PLATES. 113 



locked together, but the anterior and posterior extremities with the 

 upper surface of the skull are wanting. The animal was young, its 

 last permanent molars not being completely developed, and the third 

 milk molar being still in position. The general character is that of the 

 present Camel ; the form of maxillaries, thickness of lower jaw and ex- 

 ternal appearance of the teeth corresponding as closely as two skulls of 

 one species would do. The position of the sub-orbitary foramen, how- 

 ever, is rather higher up on the maxillary, and the tapering of the 

 lower jaw is less than in the existing Camel. This specimen is also 

 figured in * Asiatic Researches,' vol. xix. Plate XX. fig. 3. — B.M. 



Length of molar series (including two last premolars), 6*2 in. Length of three 

 true molars, 4 - S in. Height of ramus of lower jaw opposite last molar, 27 in. 

 Thickness of ramus of lower jaw opposite last molar, 1*35 in. Length of molar 

 series of lower jaw (including last premolar), 6 - 3 in. Length of true molar of lower 

 jaw, ditto, 5 - 6 in. 



Figs. 4 and 4 a. — Camelus Sivalensis. Cranium including occiput 

 and nasal bones. The great width and massiveness of the cranium as 

 compared with the muzzle are well seen, and also the antero-posterior 

 elongation of the orbit. — B.M. 



Antero-posterior diameter of orbit, 2 - 3 in. Height of ditto, l - 6in. Between 

 anterior angle of orbit and sub-orbital foramen, 2'3 in. Length of first and second 

 true molars, 2 - 6 in. "Widest part of cranial box, 3'7 in. 



Figs. 5 and 5 a. — Camelus Sivalensis. Lower jaw, which on the 

 right side, with the exception of the condyle and coronoid process, is 

 almost perfect. Fragments containing molars of upper jaw are still in 

 apposition at some places. The specimen shows four incisors on the 

 left side ; the third right incisor is Avanting. The wear of the teeth 

 and the flattened surface of the fourth or pointed incisor show that the 

 animal must have been of considerable age. This specimen is also 

 figured in the ' Asiatic Researches,' vol. xix. Plate XX. fig. 4, a larger 

 quantity of matrix containing remains of upper jaw being there still 

 adherent. — B.M. 



Between outer margins of canines, 2 - 5 in. Between outer margins of first pre- 

 molars, 2"1 in. Diastema between canine and first premolar, *7 in. Length of 

 the molar series, 59 in. Diastema between first and last premolar, 3 - in. Length 

 of the three true molars, 4 - 9 in. Length of symphysis, 5 - 3in. Interval between 

 rami opposite last molars, 2 - 6in. 



Plate LXXXVIL 

 Camelus Sivalensis. 



Figs. 1 and 1 a. — Palate with molar series on both sides imperfect. 

 That on the right side is most complete, and contains the penultimate 

 and last deciduous molar and the two first true molars.— B.M. 



Length of molar series, 4 - 9in. Length of penultimate milk molar, 5 in. 

 Length of last deciduous molar, 1*3 in. Length of first true molar, 1*6 in. Length 

 of second true molar, 1*9 in. 



Figs. 2 and 2 a. — Fragment of upper jaw, left side, containing three 

 true molars. — B.M. 



Length of true molar series, 4-9 in. Length of first molar, T3 in. Length of 

 nd ditto, 16 in. Length of third ditto, 1*9 in. Width of grinding surface of 

 first true molar, 1*1 in. 



Figs. 3 and 3 a. — Fragment of upper jaw, left side, showing the 



