DESCRIPTION OF PLATES. 99 



Figs. 17, 17 a, and 17 b. — Metacarpal bone (medius) of Rhinoceros 

 Perimensis. 



Extreme length, 7'7 in. Smallest transverse diameter of shaft, 2-2 in. Breadth 

 of posterior articular surface, 1-9 in. Height of ditto, 1*9 in. 



Figs. IS, 18 a, and 18 b. — Astragalus of Ehinoceros from the Ner- 

 budda Pass.— B.M. 



Breadth of tibial surface, 3- in. Smallest antero-posterior diameter, l - 7in. 

 Breadth of scaphoid surface, 1-9 in. Greatest breadth of cuboid surface, "9 in. 

 Height of scaphoid surface, 1-8 in. Height of cuboid sm'face, 2* in. 



Figs. 19, 19 a, 19 b, and 19 c. — Scaphoid bone of carpus of Rhino- 

 ceros. 



Figs. 20, 20 a, and 20 b.— Head of humerus. 



Figs. 21, 21 a, and 21 b. — Lower extremity of right radius. 



Plate LXXVII. 



Bones of Anterior Extremity of divers Fossil Indian Species of 

 Rhinoceros. 



Figs. 1, 1 a, 1 b, and 1 c. — Humerus, radius, and ulna in situ. This 

 specimen "was described and figured by Messrs. Baker and Durand in 

 the Journ. As. Soc. for August 1836, vol. v. p. 498, Plate XVII. figs. 

 1 and 2. The humerus is perfect, with the exception of the deltoid 

 crest. The length of the humerus exceeds that of any of the existing 

 species of Rhinoceros. Its thickness, in proportion to the length of 

 the bone and the development of the articulating pulley, are inter- 

 mediate between the Sumatra and Indian species. The breadth at the 

 condyles is nearly in the same proportion as that of the Indian Rhino- 

 ceros. The length of the radius in proportion to the femur is a little 

 less than in the Indian, and somewhat in excess of the small Sumatra 

 species. — B.M. 



Length of humerus from upper articular surface to lower surface of inner con- 

 dyle, 17' 3 in. Extreme length of humerus, 21* in. Greatest width of humerus at 

 termination of deltoid crest, 6"3 in. Greatest width of humerus at upper extre- 

 mity, 62 in. Greatest oblique diam. of humerus at lower extremity, 7'8 in. 

 Greatest ant. posterior diam. of upper extremity, 6'3 in. Greatest ant. post. diam. 

 of lower extremity, 5 - in. Circumference of shaft beneath deltoid crest, 11-5 in. 

 Diameter of upper articular surface, 4"2 in. Width of lower articular surface, 4"6 

 in. Length of radius, 15'5 in. "Width of upper extremity of ditto, 4 - 8 in. Probable 

 width of lower extremity of ditto, 4-8 in. Length of ulna (olecranon broken), 

 193 in. Width of conjoined lower surfaces of radius and ulna, 6'6 in. Circum- 

 ference round centre of conjoined shafts, ll - 7 in. 



Figs. 2, 2 a, 2 b, and 2 c. — Humerus, with strongly-developed deltoid 

 crest. This specimen also is described and figured by Messrs. Baker 

 and Durand, Journ. As. Soc, vol. v. p. 499, Plate XVII. fig. 5.— B.M. 



Length of fragment, 12 - 2in. Width including deltoid crest (upper extremity), 

 8' in. Antero-posterior diameter of ditto, 6 - l in. Length of deltoid crest, 8 - 2in. 

 Greatest width of lower extremity, 7' in. Antero-posterior diameter of ditto 

 internally, 4'6 in. Width of lower articular surface, 4'4 in. 



Figs. 3, 3 a, and 3 b. — Fragment of head of humerus. — B.M. 



Length of fragment, 12-5 in. Width of upper extremity, including deltoid crest, 

 7-9 in. Antero-posterior diameter of ditto, 5 - in. Length of deltoid crest, 8*6 in. 

 Diameter of articular surface of head, 3-6 in. 



