1901.] 



FIVE-HORNED GIRAFFE FROM MOUNT ELGOy. 



479 



South Africa, belonging to G. c. capensis, the least horned of all, 

 we shall find, if we look at it from the occipital aspect, that 

 even in this there is a swelling which cannot be considered 

 as any part of a muscular ridge or accessory projection (this 

 aspect in the five-horned Giraffe is shown in text-fig. 45 ) l , and to 

 which no homologue can be found in the Ungulates other than the 



Text-hV. 45. 



Occipital view of skull of old male Five-homed Giraffe. 

 Johnston Collection. 



Giraffidae. In the Cervidae and Bovichr, however largely the bony 

 ridges may be developed, there is just as much bony surface as 

 may be required for the attachment of the nuchal tendons and 

 muscles, but no more ", the rounded projection above the muscular 

 fossa in Giraffidae being therefore of a different nature to these 

 bony ridges and, as 1 believe, representing the mizen horns. In 

 the Okapi again, while nothing of the sort can be made out in the 

 larger of the- 1 wo known skulls (of 1 1n- BOX of w hich we have as yet 



1 The surface of old male Giraffe skulls is always Largely covered with an 

 r \ ,,..,-, ,n- outgrowth, having a stalagtnitia appearance, which cements 

 the horns to tin' skull, ooveri the face with roughening, makes accessory lumps 

 on the top of tli'' doss and above tin' orbits, doses up the anteorbita] vacuities, 

 and every where greatly increases the weigh! ami strength of the skull. Bui ( 

 am satisfied bj the appearances in yonth that the misen horns arc essentially 

 different from these bony secretions. 



- Lii<-rally speaking ption to this statement, hut the 



projection above it~ occipital fossa is obviouan of an entireh different nature. 



32* 



