898 



THE UNGULATES, OR HOOFED MAMMALS 



far back on the skull and separated by a long tuft of hair. The gland below the eye 

 is small, and is peculiar in opening either in the form of a slit (as in the species fig- 

 ured) or as a row of small pores. The muzzle has a large naked portion, and the 

 tail is very short. The upper molar teeth have broad and square crowns (as in the 

 figure on p. 748), and thereby differ markedly from those of the preceding group. 

 The majority of the duikers are light and elegantly-built animals, of a more or less 

 uniform color, and are all very similar in structure. From their generally inhabit- 

 ing jungly or forest country, they are frequently spoken of as bush bucks, but since 

 that name is also employed for the guib (p. 865), its use is best avoided. 



THE DUIKERBOK. 

 (One-thirteenth natural size.) 



The common or true duiker ( Cephalophus gfimmf) is found in bush-covered dis- 

 tricts from the Cape to the Zambezi and Nyassaland, and on the West Coast ranges, 

 as far north as Angola. It stands about twenty-six inches in height, and belongs to- 

 a group of three species characterized by the general absence of horns in the female, 

 and by those of the male rising upward at a sharp angle to the plane of the nose. 

 The ears are very long and narrow, and the color typically yellowish brown, with a 

 more or less marked gray tinge; but there is a great variation in this respect, some 

 skins tending to reddish and others to greenish, while the amount of white on the 

 under parts is also variable. The length of the horns is usually from three to four 

 inches, although they may reach five inches. The name duiker, it may be men- 

 tioned, signifies diver or ducker, in allusion to the rapidity of the creature's move- 



