515 



2984. The sacrum of the same Rhinoceros. 



This consists of four anchylosed vertebrae. The articular surface for the ilium is formed 

 by the first three. The metapophyses are distinct in the first two. The neural spines are 

 long, strong, and tubercular at the end ; the last curves very much backwards. The three 

 interarticular cartilages between these four vertebrae have not yet become confluent with the 

 surfaces of the adjacent bones. 



2985. The first pair of ribs. 



The tubercle is almost as large as the head, and its articular surface is of great size. 



2986. The second pair of ribs. 



Both this and the first pair are flat, very slightly curved bones, becoming expanded 

 distally, and presenting no grooved inferior or posterior border. 



2987. The third pair of ribs. 



The inferior border is slightly grooved. 



2988. The fourth pair of ribs. 2989. The fifth pair of ribs. 



2990. The sixth pair of ribs. 2991. The seventh pair of ribs. 



2992. The eighth pair of ribs. 2993. The ninth pair of ribs. 



2994. The tenth pair of ribs. 



The length of the rib, from the tubercle, is 2 feet 8 inches. 



2995. The eleventh pair of ribs. 



The length of the rib, from the tubercle, is 2 feet 9y inches. 



2996. The twelfth pair of ribs. 



The length of the rib, from the tubercle, is 2 feet 10 inches. This is the longest tho- 

 racic rib. 



2997. The thirteenth pair of ribs. 2998. The fourteenth pair of ribs. 



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