1908.] 



OKAPI AND GIRAFFE. 



323 



The contrast in this respect between Giraffe and Okapi is very 

 ^reat, as text-figs. 60 and 61 cleaiiy show. 



Text-fig. 62. 

 BOS TAURUS. 



S|^NT^ :^'- .^^- POST. ^;j 



The last three cervical veitebne and the tirst dorsal ui a domestic Ox [Bos taurus), 

 seen from the left side. 



Letters as in test-fig;. 60, except l.2.p.(r.), which points to the rudimentary/ 

 posterior lateral zygapophysial process of the first dorsal vertebra. 



Note the close agreement of these five vertebrae with those of Okapi and 

 their diflference fi-om the same group in Giraffe. 



It may perhaps be possible to show that these differences of 

 proportion in the neviral spines and transverse processes are 

 connected with the special mechanism of the very long neck of 

 Giraffe. The greater size and breadth of these bony processes is 

 merely an expression of the greater size of the muscle-tendons and 

 of the ligaments, of which they may be regarded as but denser 



