THE LEYDEN MUSEUM. 23 



same, but iu leucoprosopus they are more vividly pronoun- 

 ced, so the in ocularis dominating color is a brownish 

 yellow (brauulich gelb Peters), in leucoprosopus however 

 a reddish brown ; the brown red on the head in ocularis 

 is much darker in the other species; the black brown of 

 tail, legs and head of the former is of a much intenser 

 sooty black in leucoprosopxis. Although the individuals are 

 apparently of about the same size the ears iu ocularis (12 

 cm.) are much larger than the same parts in leucoprosopus 

 (10.5 cm.). 



Measurements of the skull of an adult female-specimen 

 of leucoprosopus: 



length of orbit to muzzle 15 cm. 



» » nasal bones 5 » 



» „ upper molar series 5.5 » 



» » lower » » 5.9 » 



distance between molars and incisors .... 3.9 » 

 » » » » intermaxillaries. . 5.1 » 



greatest breadth of skull 7.4 » 



Both species are quite different from the Common Dui- 

 ker. I never saw a specimen of altifrons Peters, however 

 judging on what Peters said in his well known book on 

 Mossambique and having no good reason to not accept 

 the correctness of Peters' figures of animal and skull, I 

 think it not-correct to head that species together with 

 ocularis too under the Common Duiker, until the non- 

 validity of both species has been demonstrated with the aid 

 of a good series of animals and skulls. 



Oreotragus saltatrixoides (Temminck). 



Temminck has given a list of the species of Antelope, 

 known by him at the year he wrote his book, Esquisses 

 zoologiques sur la cote de Guinee, 1853. In a note on p. 

 191 he declared that his Antilope saltatrixoides from Abys- 

 sinia »diffère autant et plus de l'espèce du Cap Sud (sa^to- 

 trix), que Buhalis pygarga diöère du Buhalis albifrons." 



Notes from tlie Leyd.en Museum, Vol. XXHI. 



