1908.] 



OKAPI AND GIRAFFE. 



333 



takes place abruptly and sharply at the articulation between 

 dors. 1 and dors. 2. Occasionally a trace of the lateral process is 

 retained on the posterior surface of dors. 1, as shown in text-fig. 

 62, l.z.jj. on dors. 1. In the Pigs and the Hippopotamus the same 

 is the case. 



Text-fig. 70. 



Dors 2 Left side 



POSTERIOR FACE. 



Similar drawing, to show the duplicate facets connecting Dorsal 2 and Dorsal 3 

 in the same animal, f nat. size. 



Text-fia-. 71, 



Dors. 3. Leff side 



POSTERIOR TACE. 



Dors. 4. Left side 



ANTERIOR FACE. 



Similar view, to show the single facets (now the median not the lateral factor) 

 connecting Dorsal 3 and Dorsal 4 in the same animal, f nat. size. 



In Tapir and Horse the articulation between dorsal 1 and dorsal 2 

 ■does not exhibit an abrupt change, but the facets are intermediate 

 in position to those shown in the joints in front and behind. 



In the Carnivora (Cats, Dog, and Fox) the break occurs at the 

 joint between dorsal 2 and dorsal 3 : the anterior joint (that 

 between dorsal 1 and dorsal 2) resembling that of the cervicals. 



