DESCRIPTION OF PLATES. 95 



l-9in. Breadth of cranium at anterior orbital angle, 8 - 3 in. Between posterior 

 borders of sub-orbital foramina, 5-2 in. Between anterior angle of orbital margin 

 and posterior border of sub-orbital foramen, 4*7 in. Breadth of rostrum, 2 - 8 in. 



Figs. 3 and 8 a. — Rhinoceros Sivalensis. Fragment of skull, com- 

 prising upper jaw, portion of orbit and prolongation of nasals for 

 horn.— B.M. 



Length of fragment, 14 - S in. From anterior angle of orbit to tip of nasal pro- 

 tuberance, 9 - S in. From concavity of nasal notch to tip of ditto, 6 - 8 in. 



Plate LXXIV. 



Figs. 1, 1 or, 1 5, and 1 c. — Rhinoceros Palceindicus. Very perfect 

 specimen of cranium, with, both zygomatic arches entire. Shows two 

 molars and two posterior premolars on either side. The third molar is 

 still in germ. The palate is deficient in front. — B.M. 



Length of cranium (fragment), 18"2 in. Between most projecting points of zy- 

 gomata, 9 - 8 in. Breadth of occiput (behind the auditory foramina), 6-1 in. Least 

 breadth of cranium (between the temporal fossae), 3-4 in. Breadth of cranium at 

 anterior orbital angles, 53 in. From anterior margin of second premolar to pos- 

 terior border of pterygoid process, 97 in. Length of palatine fissure, 3'7 in. Dis- 

 tance between the internal angles of the glenoid facets, 3 - in. Length of alveolar 

 margin of exposed molars, 6 - l in. Between external alveolar margins of last ex- 

 posed molars, 6'4in. Between external alveolar margins of anterior molars, 3 - 7 in. 

 Height of cranium from alveolar margin at anterior margin of third molar, 6 - l in. 

 Width of palate anteriorly, 2 - 3 in. ; ditto, posteriorly, 2-3 in. 



Figs. 2, 2 a, 2 b, and 2 c. — Rhinoceros Palceindicus. Skull of a 

 larger and older animal than fig. 1. Both zygomatic arches are defi- 

 cient, and the portion in front of the fourth premolar is also broken 

 off.— B.M. 



Length of fragment, 20'1 in. From lower margin of occipital foramen to posterior 

 border of palate, 12-2 in. From ear (anterior margin) to sub-orbital foramen, 

 lo-oin. From ditto to anterior angle of orbit, 10'6 in. Height of occipital facet 

 from lower margin of occipital foramen to occipital crest, 7*7 in. Height of cra- 

 nium at anterior angle of orbit from alveolar border, 7"2 in. Height of occipital 

 foramen, 1-2 in. Breadth of ditto, 1*2 in. Between internal angles of glenoid 

 facets, 3-3 in. Width of palate posteriorly and anteriorly, 3 - l in. Between ex- 

 treme points of external alveolar borders of molars, 10" in. Least breadth of cra- 

 nium (between temporal fossse), 4 - 3 in. Breadth of cranium at anterior orbital 

 angles, 8 - 5in. From centre of occipital crest to posterior border of nasal notch, 

 16 - 7 in. Length of alveolar border of three true molars, 6 - 5 in. Breadth of alveoli, 

 3-2 in. 



Figs. 3 and 3 a. — Rhinoceros Palceindicus. Fragment of lower jaw, 

 left side, with four posterior molars.- — B.M. 



Length of fragment, 15 - 8 in. Length of alveolar border of molars, 8 - 3 in. 

 Breadth of ascending ramus, 6- in. Depth of jaw anteriorly, 3 - l in. Thickness of 

 ditto, 3-2 in. 



Figs. 4 and 4 a. — Rhinoceros Palceindicus. Fragment of symphysis 

 of lower jaw, with incisive alveolar ridge and large outer left incisor. 

 —B.M. 



Between external alveolar borders of incisive alveoli, 4 - 5 in. Length of existing 

 portion of symphysis, 4-4 in. Interval between anterior premolar and incisive al- 

 veolus, 2-6 in. Greatest thickness of alveolus, 17 in. Great diameter of incisor, 

 1*3 in. Lesser diameter of ditto, VI in. Length of tusk (projection), 1*9 in. 



Fig. 5. — Rhinoceros Sivalensis. Portion of cranium, showing palate 

 with molar ridges and nasal projections. The portion behind the 

 second molar is broken off. — B.M. 



a 2 



