74 



DR. C. I. FORSYTH MAJOR ON THE OKAPI. [June 3, 



sketch of the natural size of the male skull were exhibited, and 

 the following remarks were made : — 



The new materials supply the eagerly looked for information as 

 to the adult condition of the Okapi and the cranial differences 

 between the two sexes. It will be remembered that even the 

 larger of the two skulls I'eceived in London, which was believed 

 to belong to the mounted skin, is that of a youngish individual, 

 retaining most of the deciduous teeth, and that the sex of neither 

 of the two skulls was established. 



It will be further remembei'ed that, although Sir Harry 

 Johnston fi-om the beginning very appropriately compared the 

 Okapi with the HeUadotherium, which is an early type of the 

 Giraffidfe, and even assigned it to that genus, the predominating 

 note of almost all the scientific, as well as the more or less popular, 

 writings on the Okapi has been so far to regard it as a kind of 

 degraded or degenerate Giraffe — a. multiple armament of the skull 

 being regai-ded as a primitive condition in Ruminants generally 

 and in Giraffidpe in particular. 



Text-fig. 8. 



Left side view of incomplete lioruless skull of Palaotragus rouenii Gaud., adult ^ . 

 From Samos. Stuttgart Museum. 7.-5 iiat. size. — This specimen is referred 

 to in Geol. Mag. (4) viii. p. 354 (1901). — The inflated condition of the orbital 

 roof is not so well shown as in the specimen text-fig. 9, owing to the ditt'erent 

 position in which the original photograph was taken. 



Text-fie-. 9. 



Crauial portion of hornless skull, left side, of SamotJierimn boissieri, adult $ . From 

 Samos. Collection of Monsieur William Barbey, Valleyres (Switzerland). 

 About 3 nat. size. 



