May 1897. East African Collection of Mammals — Elliot. 125 



kind of country, but I have never seen them associated together. 

 As mentioned by Swayne, it frequents the jungle of the umbrella 

 mimosa, and glades of dur?- grass, often taking refuge in dense 

 high patches of this last, especially when wounded. The horns 

 of the male are peculiar and shaped more like those of a reed- 

 buck, and measure from 8 to 1 1 inches along the curve. 

 The female is without horns. The Dibatagxs a gracefully formed, 

 beautifully colored animal, and possesses more sporting qualities 

 than any antelope we met with, unless it might be the two 

 species of Koodoo, particularly the lesser Koodoo. 



Roof of cranial cavit}' convex from rear of pedicles to supra- 

 occipital, the slope being very considerable from anterior to lamb- 

 doidal suture to the posterior extremity of the skull. Inter- 

 parietal rather large; facial portion flat, descending rapidly at the 

 posterior part of the orbits, and retaining its width to the posterior 

 edge of first molar, when it narrows rapidly to the premaxillae. 

 Orbital vacuity considerable, pointed posteriorly and rounded 

 anteriorly. Lacrymal fossa deep and occup3'ing the surface of 

 the lacrymal, its length being about one-halt the diameter of the 

 orbit. Nasals flat on top, slightly rounded at the sides, and 

 pointed both anteriorly and posteriorly. Premaxillae very long, 

 rather broad, curved upwards at their posterior end, and joining 

 the nasals, where the articulation is very broad. Pedicles only 

 moderately high, the base of the horns elevated slightly above 

 the plane of the skull. Orbits very large. Paroccipital process 

 long, curved inward at tip, and hanging well away from and 

 below the auditory bullae. These last are only moderatelj'^ large, 

 the extreme width equal to one-half the length, and oval in 

 form. External auditory meatus prominent, tubular. Pterygoids 

 rather short, broad above, ending below in a hamular process 

 projecting backwards. Palatine of moderate extent, posteriorly 

 deeply notched, this last beginning with a narrow slit and widen- 

 ing towards the pterygoids. Mandible long and slender, in this 

 respect resembling that of Lithocranius walleri ; the condyle is 

 broad and flat, the coronoid process long and narrow, and curved 

 backwards, angle partially rounded extending considerally beyond 

 the condyle and coronoid process. Tooth row extending over 

 one-half the length of upper line of mandible, premolars 

 small, molars large, occupying more than twice the space of 

 premolars. Horns in shape like those of the reed-buck, deeply 

 annulated on lower half, graduating to a point, which tends 

 upward and slightly forward. 



