1901.] Off THE IBEX OF ABYSSINIA. 281 



accompanied by a striping in dark brown and white of the fore 

 and hind limbs. 



Distinguished from Helladotherium by the presence of large 

 prae-lacrymal vacuities in the skull as in Giraffa, by the presence 

 of a pair of lateral posterior dome-like prominences on the frontals 

 (representing the bony outgrowths of Giraffa), and, lastly, by the 

 presence of a minute accessory tubercle on the mediad face of the 

 first upper true molar, which exists sometimes in Giraffa but is 

 absent in Helladotherium. 



Species. Ok api a. johnstoni. 



(=Equusjohnstoai Sclater, P. Z. S. 1901, vol. i. p. 50.) 

 The only species known, now represented by two skulls and a 

 complete skin, was originally described as Equus johnstoni by 

 Dr. P. L. Sclater, from two pieces of skin which it appears were 

 cut from the striped region of the hind limbs. 



Sir Harry Johnston, who was himself present, gave an account 

 of the facts connected with his discovery of the Okapi. 



Sir Harry also stated that during his last excursion to the north 

 of Mount Elgon he had found large herds of a Giraffe in that 

 country which appeared to be distinct from previously known 

 forms of this mammal in having five horns, four placed in pairs 

 and one anterior in the middle line. Pour examples of this 

 animal were now on their way home, and would soon be here to 

 settle the validity of this presumed new species. 



The Hon. Walter Rothschild, M.P., F.Z.S., exhibited specimens 

 of a mounted male and two unmounted males and a female of the 

 Ibex of Abyssinia (Copra ivcdie Riippell), and made the following 

 remarks : — 



When Mr. R. Lydekker wrote his great work 'The Wild Oxen, 

 Sheep, and Goats of All Lands,' in 1898, this fine species was 

 only known from the type specimens in the Senckenberg Museum 

 at Frankfort. Since then a few pairs of horns have been un- 

 earthed, collected at various times by Herr Menges, the wild- 

 beast trapper, but it has remained for Captain Powell-Cotton to 

 clear up the history of Cupra ivalie by the fine series he has 

 collected of this fast-vanishing form. 



Riippell's original description is as follows : — " Front and upper- 

 side of head, neck, and back beautiful chestnut-brown ; muzzle, ;i 

 curved Btreak between eye and ear, sides of neck, body, and rump 

 reddish umber-brown. Region under the eye and ear, the chin, 

 throat, chest, and inner surface of the thighs and belly dirty 

 white. Outer side of thighs and legs and sides of belly dirty grey. 

 Feet whitish, with a large spot at the fetlock and a si ripe down 

 the legs black. Boot of tail chestnut-brown, tip black. Inner 

 side of ears while, with a reddish border, outer surface red-brown. 

 Jris of eye pale brow n, pupil dark blue." 



