238 CLASS MAMMALIA. 



him by Colonel Gordon. It has since been further de- 

 scribed by Professor Lichtenstein and Mr. Barrow, and 

 Mr. Burchell brought the spoils of several with him from 

 Africa. The Rietbock is full four feet six or eight inches 

 long, two feet ten or eleven inches high at the shoulder, 

 and more than three feet at the croup ; the ears are above 

 six inches long, and the tail between nine and ten ; the 

 horns are from ten to twelve inches long, recumbent be- 

 neath the plane of the face, divergent, regularly curved, 

 with the points forwards, or rather upwards ; they are 

 black, wrinkled at base, and annulated with obscure and 

 imperfect rings in the middle; the superior third smooth; 

 the head is ten inches long ; the eyes black ; the subor- 

 bital pores not visible ; the nostrils with small muzzle of 

 black colour, but sometimes white ; the colour of the fur 

 is in general of an ashy-gray, tinged with ochre ; the ears, 

 lips, throat, breast, belly, anterior and infernal side of the 

 thighs and arms, white ; the hair of the throat long and 

 pendent,; a blackish edge passes round the tip of the ears, 

 and the tail is mixed with rufous and white at the end ; the 

 anterior and external side of the legs are ochery, and the 

 rest white. This species is either monogamous, or resides 

 in small families, among the reeds and bushes of dried 

 river courses, and along the edges of springs, in the in- 

 terior of Caffraria. We have compared five specimens. 

 The females are smaller, and hornless, but resemble the 

 male in colours and figure. 



The Nagor. (A, Redunca.) This species is known only 

 from Mr. Adanson's specimen and Count de Buffon's de- 

 scription ; there are indications about it which create a 

 suspicion that it is the young of the following or only a 

 variety. It is described as above four feet long, two feet 

 four inches and an half at the shoulder, and two feet 

 eight inches at the croup ; the horns are short, black, 

 straight, with one or two rings almost smooth, and slightly 



