284 



DE. E. RAY LANKESTER ON OK API A. 



horns, but rather emphasize their absence by comparing the aniinul to a horse, tliat 

 no horns are ever developed in either male or female Okapi i. 



Given an animal which, as shown by the skin, possessed no rudimentary digits by 



Text-fig. 2. 

 '"'■'' S(l V^ oil. ^i^^ 



Lateral view of the skull of the Okapi, the individual being about two-thirds grown, to compare with 



the similar figure of a Giraffe's skull (test-fig. 3). 



occ, occipital crest ; (j.tJ,., position of the lateral parietal tumescence and epiphysis of the Giraffe, absent here ■ 



s/ji>., fronto-parietal suture ; o<^., the lateral frontal tumescence of the Okapi, absent in Giraffe; otm., 



the median basinasal tumescence of the Okapi; flv., prfelacrymal vacuity; -p.h., palatine horizontal. 



Text-fig. 3. 



Lateral view of the skull of a Giraffe, about two-thirds grown, to compare with the similar view of the Okapi's 

 skull, which also appears to have belonged to an individual which had completed only two-thirds of its 

 growth. 



occ, occipital crest ; p.oss., parietal osseous cap (epiphysis) overlying the parietal conical upgrowth ; sfp., 

 fi-onto-parietal suture ; o.t.l, position of the lateral frontal tumescence in the Okapi, absent here ; g.t.'m., 

 the characteristic median tumescence of the Girafte's frontal, devoid in this specimen of any secondary 

 cap or epiphysis, absent in the Okapi ; pZ?;., the prselacrymal vacuity ; j>.h., palatine horizontal. 



the side of the main paired hoof-bearing digits — what are the characters of the 



skull which in the first instance enable us to refer the specimen to the Giraffidse 1 



la the first place, the general characters of the dentition — absence of incisors and 



See Appendix and text-figure on p. 304. giving an account of two new specimens, male and female, with 

 horns two to three inches in length. 



