1908. 



OKAPI ANB GIRAFFE 



327 



difference between Okapi and Giraffe in regard to the inferior 

 transverse process of the cervical region — when the chief facts as 

 to this structure in other mammals are taken into view. Clearly- 

 enough it is Giraffe which is altogether exceptional, ■ novel and 

 specialised, not archaic or atavistic. Giraffe has not even the great 

 plate-like inferior transverse process on its 6th cervicals, which 

 is obvious and prominent in such widely separate forms as the 



Text-fig. 65. 



GIRAFFE. 



GIRAFFE, 



Dors K 



Cerv. 7. 



POSTERIOR FACE. 



ANTERIOR FACE. 



The same view of the same vertebrge in Giraffe as that given in the case of Okapi 

 in text-fig. 64. The figure shows the single pair of articular facets raised on 

 zygapophj'ses. No median facets on the sides of the neural arch are developed. 



Letters as in text-fig. 64, except ti., inferior transverse process of Cerv. 7. 



Hedgehog, the Carnivora, and the commoner Ungulata. Okapi 

 merely agrees with other Ruminant Ungulates in the matter 

 of its adjacent cervical and dorsal vertebrae, and they seem to 

 be a little more specialised, than the Pigs and Perissodactyles, in 

 having a large inferior transverse process only on the 6th cervical 

 and quite small ones on the vertebrte in front ; whereas Pigs and 

 Perissodactyles have that process more equally developed on ail 

 the cervical series 3, 4, 5, 6. The emphasis of the inferior trans- 

 verse process on cerv. 6 appears to be the rule in Mammalia and 



