ENDOCRANIAL CASTS OF THE GIRAFFIDAE oor 
(2, p. 305) states that ‘there are no external horns.’ This 
however is quite incorrect, for paired horns are present in the 
male though only represented by hair tufts in the female (18). 
The volume of the endocranial cast is 450 ce. 
As in the giraffe the greatest transverse diameter of the cast 
is in the parietal region, where it measures 100 mm.across. From 
the pontine surface to the highest point over the vermis the cast 
S.diag 
.-9.Cor, 
\.-S.ans, 
SiPs.e- 
_j__S.suprasyly, 
_._.R.dese.ss. 
.-R.post.ss. 
r. 
Floc. q 
S.trirad.post. -- ~ 27 —-— 
M Are, 
For.condyl.--c, ~ 
Figs. 4,5 and 6 Outline drawings of endocranial cast of Ocapia johnstoni, 
ventral, dorsal and right lateral views respectively. Abbreviations, see page 332. 
For photographs from which the outlines were taken, see figures 20 to 22. About 
+ natural size. 
