200 



MR. R. H. BURNE ON THE 



has the simple form common to Ruminants. The eminence sup- 

 ported by the arytenoid and Santorini's cartilages is peculiarly 

 large and prominent (text-fig. 14, s.c). The general cavity (text- 

 fig. 15) is quite simple, without recesses or pouches of any kind, 

 and, as in the Giraffe, the vocal cords (text-fig. 15, v.c.) are 



Text-figure 16. 



TH C 



A. 1*1 



C.TH.M 



Longitudinal section of the. larynx of Okapia johnstoni, showing the cartilages. 

 Lettering as in text-figs. 14 & 15. 



extremely rudimentary, represented only by minute folds con- 

 necting the ventral extremities of the enormous arytenoids to the 

 mid-line of the thyroid cartilage. The cartilages (text-fig. 16) 

 closely resemble those of the Giraffe. The muscles (text-fig. 14) 

 are similar to those of other Ruminants, and call for no special 

 comment. 



