MADOQUINi^i 183 



species, but darker towards shoulders and haunches ; crest 

 dull rufous, grizzled with yellow, rufous, and black in front. 

 Basal length of skull 3^g- inches (90 mm.), maximum width 

 21 inches (53 mm.). 



9. 6. 1. 50. Skull, with horns, and skin. Dirri Dawa, 

 Abyssinia. Type. 



Presented hy Dr. E. E. Drake- Brochnan, 1909. 

 9. 6. 1. 49. Skull, with horns, and skin. Same locality. 



Same history. 

 9. 6. 1. 51. Skull, with horns, and skin. Same locality. 



Same history. 



2. Subgenus RHYNCHOTRAGUS. 



Ehyachotragus, 0. Neumann, Sitzber. Ges. nat. Freunde, 1905, p. 88. 



Last lower molar with a hind (third) lobe, which may, 

 however, be very small ; upper line of premaxillse S-shaped ; 

 nasals shorter than in typical subgenus ; proboscis strongly 

 developed. Typically the colouring of the back not separated 

 from that of the head by a third colour. The distributional 

 area is co-extensive with that of the subfamily. 



The following is a tentative key to the species of the 

 group : — 



A. Nasals medium, their tips on a level with front 



edge of anterior premolars, and distant 



about Ij^ inches from tips of premaxillae. 

 a. Size large. 



a'. Nasals moderately broad M. damarensis. 



V. Nasals broader M. cavendishi. 



h. Size smaller. 



a' . Back yellowish grey or bright grizzled 



fulvous M. hirlii. 



V. Back bright rufous tawny M. thomasi. 



B. Nasals shorter, their tips about on level with 



hind border of penultimate premolar, and 

 distant about If inches from tips of pre- 

 maxillas (in gueniheri). 



a. Face uniformly coloured ; nasals moderately 



short M. guentheri. 



b. Lower part of face profusely spotted with 



white; nasals very short M, nasoguttata. 



