336 PHYSIOLOGICAL SERIES. 



D. 460. The brain of a Duikerbok (CephalopJius dorsalis), ( ? ). 



This larger brain conforms to the same type as tin- 

 pygmy species. The suprarhinal opcrculum is notably 

 better developed. 0. C. 1327 ce. 



D.461. The brain of a Duikerbok (Cephaloplms mcuewelli), ( 9 ). 

 See the account of the pygmy species. 0. C. 1327 c/. 



D. 462. The brain of a Cephaloplius grimmi. 



D. 463. A cast of the cranial cavity of a Duikerbok (Ce/>/i- 

 lophus natalensis). 



D. 464. The brain of a Four-horned Antelope (Tetraceros qmulri- 

 cornis). 



D. 465. A cast of the cranial cavity of the Royal Antelope 

 (Ourebia montana). 



D. 466. A cast of the cranial cavity of a Reitbok (Cervicapra 

 arundinuni). 



D. 467. The brain of a Black-Buck (Antilope cervicapra) , ( $ ). 



This brain conforms to the same pattern as those of the 

 Deer. 



Of the three oblique furrows of the " lateral series " the 

 mesial is the deepest and the most pronounced Instead of 

 this being the lateral, aa mi^ht be imagined, it represent! 

 an entolateral sulcus, which hns attained to a ii renter 

 importance at the expense of the true lateral the inter- 

 mediate of the three snlci. 



There is a small, ectosylvian, arcuate sulcus, the posterior 



limb of which joins the Sylvian fissure, as in some of the 



nivora. 0. C. 1327 ca. 



D. 468. The brain of an Antelope (Ant Hope sp.). 



Note the junction of the crucial-like prolongation of the 

 intercalary with the coronal sulcus on the ri^lu -id<>. 



0. C. 1327 c. 



D. 469. A cost of the cranial cavity of a I 'alia (./>/< 

 melampus). 



