May 1897- East African Collection of Mam>l\ls — Elliot. 117 



long crest-like tuft of rufous-colored hair. The face narrows 

 rapidly in front of the orbits, giving the head a wedge-shaped 

 appearance. The plates showing the skulls of these two ante- 

 lopes exhibit their peculiar shape, together with the form and set 

 of the horns. The figure of this species in Sclater and Thomas' 

 " Book of Antelopes" is not nearly richly enough colored. The 

 flanks are too light. The skull of this species is longer than that 

 of the preceding and comparatively narrow. There is the same 

 abrupt descent of the occipital region, but the upper outline of 

 the facial region is not so flat but forms a slight compound curve. 

 Nasals are much longer and curved at the anterior end. Lacrymal 

 fossa is very large and e.xtends beyond the lacrymal to near the 

 anterior end of the maxilla. Premaxillac curved posteriorly but 

 not so abruptly as in the other species. Median line of palatine 

 produced beyond the anterior edge of second upper molar. 



INCHES. 



Total length of skull 3-95 



Frontoparietal suture to posterior end of nasals 1.22 



Length of nasals 90 



Anterior rim of orbit to extreme end of premaxillla? 1.82 



Length of premaxilla; 1.40 



Width of skull at anterior rim of orbit 1.45 



Inferior rim of orbit to alveolus of second upper molar 55 



E xtent of upper premolars 60 



" " " molars 60 



" " lower premolars 60 



" " " molars 85 



Madoqua guentheri (Thomas). 



Madoqua guentheri. Guenther's Dik-Dik. Native name 

 Sakdro Gussiili. 



$ ad. Dagahbur. Ogaden. 



This Dik-Dik, peculiar among species of this genus in Somali- 

 land on account of its lengthened muzzle, is not found so far as 

 mv experience goes, north of the southern limits of the Haud. 

 We met with it for the first time at Dagahbur, and together with 

 Phillip's Dik-Dik it is found throughout Ogaden. In size it is 

 much larger than either of the preceding species, and has a very 

 differently colored coat, but would without these characteristics 

 be readily distinguished bv its long muzzle. It is not nearl}' so 

 handsome a species as the other Dik-Diks, lacking entirely the 

 strongly contrasting coloring which they possess. It goes in 

 larger troupes than either of the other two species, and some- 



