480 
UNGULATES. 
would make it about 14 feet. One of the specimens referred to below has a length 
of 12 feet 1 inch, and a height at the shoulder of 6 feet 2 inches. 
There is fully as much variation in the relative length of the horns as in the 
common species, the second horn being sometimes a mere stump, and at otheis 
attaining a length of 2 feet, while in some instances both are comparatively 
short. The front horn is, moreover, liable to considerable variation in shape. Thus, 
in the typical form of the species, it curves backwards in a more or less bold sweep, 
as shown in our figure of the head, the individuals exhibiting this form being 
known to the Bechuanas by the name of mohohu. In other cases, as shown in our 
illustration of the entire animal, the front horn is nearly straight, with a forward 
inclination, specimens with this type of horn being designated by the natives as 
the kabaoba. When the anterior horn is straight and attains the length of about 
a yard, the point touches the ground as the animal walks along when feeding, and 
such horns consequently always show a flat surface on the front of the tip pro¬ 
duced by friction. It was at one time considered that the mohohu and the kabaoba 
were distinct species, but Mr. Selous has shown not only that they consort together, 
but that there is a complete transition from the one type of horn to the other. As 
a rule, the horns of females are longer and more slender than those of males. 
