DESCRIPTION OF PLATES. 2-3 



Plate LXXII. 



Fig?. 1, 1 a, and 1 b. — Rhinoceros platyrhinus. (Falc. and Cant.) 

 From the Sewalik hills. Mutilated cranium, anterior part, showing 

 lateral, upper, and palate surfaces. The specimen is so worn that the 

 teeth are scarcely distinguishable. The upper surface of the skull is 

 broad and flat. — B.M. 



Length of fragment, 17' in. ; height posteriorly, 9 - 7 in. ; height anteriorly, 8 - in. ; 

 greatest breadth at anterior angles of orbits, 10'6 in. ; depth of nasal notch, 6 - in. ; 

 height of nasal notch anteriorly, 5'5 in. 



In 1847 Dr. Falconer noted that R. platyrhinus partakes of the 

 characters of both R. leptorhinvs (sic) and R. tichorinus, and on the 9th 

 of August, 18G0, he made the following note : — 



1 Examined Baker's large skull of the Sewalik Rhinoceros 'platyrhinus in B.M. 

 The molars are in fine condition, six on either side. The last true molar only just 

 touched by wear. The last t. m. exactly like Rh. hemitmchus, in having a pos- 

 terior basal funnel-shaped pit ! while the penultimate and antepenultimate t. m. 

 and the penultimate and antepenxdtimate milk m. have each three distinct fossettes, 

 as in Rhinoceros tkhorhinusl the vertical ridges of the anterior side very well 

 pronounced in three valleys. Had two large incisors above and four below : of the 

 latter, the two outer big ; the two inner small, as in the existing Indian Rhinoceros.' 



Figs. 2, 2 a, and 2 h. — Rhinoceros platyrhinus. Fragment showing 

 posterior part of cranium, with foramen magnum, occipital condyles 

 and crest, portion of right zygomatic arch, and condyle of lower jaw. 

 —B.M. 



Length of fragment, 10 - 6in.; height of occipital facet from lower margin of 

 occipital foramen to summit of occipital crest, 12 - in. Breadth of occipital facet 

 above, 8'4 in. ; ditto below, 13'2 in. Height of occipital foramen, 2*5 in. ; breadth 

 of ditto, 2- in. Between extreme points of occip. condyles, 5 - 3 in. Least width of 

 cranium, 3 - 3 in. Breadth of condyle of lower jaw, 6 - 7 in. ; ditto of ascending ramus, 

 6 - in. Between inner angles of glenoid facets, 2*5 in. Depth of zygomatic process, 

 3-3 in. 



Fig. 3. — Rhinoceros ]>l city rh inns. Fragment of skull, upper jaw, 

 with molar ridge, and large sub-orbital foramen. — B.M. 



Length of fragment, 13-2 in. Prom root of molar origin of zygoma to sub-orbital 

 foramen, 7*5 in. Length of molar series, 10"8in. Greatest breadth of molar al- 

 veoli, 2-8 in. 



show the two horizontal rami with the No. 319. Sus ? Fragment of 



remains more or less of seven molars on lower jaw, right side, comprising pos- 

 either side, the bases of both canines terior part of horizontal ramus, broken 

 and more or less of the six incisors. ■, across horizontally near the base of the. 

 The specimen is still much covered with teeth, and containing the last two mo- 

 matrix; the four premolars on the left lars, the penultimate well worn with 

 side show part of their crowns ; on the very flexuous enamel ; the last molar in 

 right side the first premolar is close to '' germ and of very large size. 

 the canine ; the true molars are well ; Xo. 320. Mutilated fragment corn- 

 worn; the canine on the left side shows [ prising part of the last true molar, much 

 a part of the tooth bending outwards, broken and cemented with matrix, 

 but the apex broken off. The other ' No. 321. Fragment comprising the 

 bones are so much covered by matrix as posterior part of horizontal ramus lower 

 to be undeterminable. jaw right side, containing the two last 



Xo. 31 8. Sus ? Fragment com- teeth in situ ; they are in the same con- 

 prising the posterior part of upper max- dition of wear as No. 319, but consi- 

 illa right side, containing the two last derably smaller. 



itu ; the penultimate is well , No. 54 (from Perim Island). Lower 

 worn, showing a very complex pattern jaw, left side, fragment containing 

 of crown ; the last molar is half wo a. merely tb" last molar of Sus Hysvdriczis'i 



G 



