ii6 Field Columbian Museum — Zoology, Vol. i. 



lar deposit, but of course from the greater size of that species, it 

 is on a much larger scale. 



Phillip's Dik-Dik and the preceding species have short muz- 

 zles and slanting premaxillae, very different in appearance from 

 J/, giientheri and its allies. We did not meet with this species 

 until we had reached the south side of the Golis Range. It may 

 exist in Guban; Swayne says it is found all over that section, 

 but we never met with it there, all our specimens belonging to 

 M. swaynei, and if it is as plentiful as he states it is very strange 

 we never procured it north of the Golis. On the other hand, M. 

 swaynei, as I have stated, is found in both Guban and Ogo, and 

 I imagine Captain Swayne has inadvertently transposed the 

 two species when giving their distribution. In their habits there 

 seems to be no difference between these two forms. They seek 

 the same kind of ground and in their ways and actions they are 

 alike. In localities where both species dwell, I have never seen 

 them actually together, and I doubt very much if they associate 

 with each other. If an individual of one species is shot, it is not 

 likely that you will be able to obtain one of the other in the 

 immediate vicinity, although it ma}' possibly be found a mile or 

 so away. 



When alarmed, these Dik-Dik utter a shrill whistle two or three 

 times repeated, and then bound away in a series of jumps as if 

 they were mounted on springs, flying at times over low bushes, 

 or leaping high in air as if to enable themselves to look back and 

 get a better sight of the intruder on their grounds. Their move- 

 ments on such occasions reminded me more of the powerful 

 jumps of the mule deer {Cariaciis macroiis, Say) than of any 

 other animal that I have seen, and in proportion to their respec- 

 tive sizes, I think the Dik-Dik could cover more ground in their 

 average leaps. They are very pretty and attractive animals, 

 with a peculiar physiognomy, caused by the black swelling 

 already referred to, and the immense eye, seemingly out of all 

 proportion to the rest of the face. It is an eve that would be 

 naturally associated with a nocturnal animal, and gives the 

 impression that its owner ought to see best in the dark, but I 

 never noticed that these antelopes were ever incommoded during 

 the daytime from lack of ability to see clearl}'. The iris is a 

 light hazel, which makes the large eye even more conspicuous. 

 Only the males of these species carry horns, about 2.50 inches 

 in length, nearly straight, sharply pointed, and annulated for 

 two-thirds their length. Between and back of the horns is a 



