DUIKERS AND SMALL ANTELOPES 549 



Rhynchotragincs: Snout with the anterior nares greatly 

 enlarged in order to accommodate the proboscis; nasal bones 

 greatly reduced, the length not greater than the width; pre- 

 maxillae greatly produced in the typical genus and turned 

 downward at the tip; anteorbital fossa large as in the Neso- 

 tragince. Genera included : Rhynchotragus and Madoqua. 



In the snout of Rhynchotragus we have a bony structure 

 quite similar to that found in Saiga, which is also a proboscis- 



'Rhynchotraginae 



Saiginae 

 ^ntilopinae Nesotraginae 



Oreotraginae 



bearing antelope. In the saiga, however, the premaxillary 

 bones are confined to the tip of the maxillary bones and the 

 lachrymal bone is greatly enlarged and projects forward to 

 the narial chamber, where it forms a considerable part of 

 the wall, r This arrangement is a unique condition in the 

 BovidcE. The relationships of the subfamilies described may 

 be expressed in the above diagram, Gazella being assumed 

 to be nearest the parent stock. 



Pygmy Antelope 



Nesotragus 



Nesotragus von Diiben, 1847, Oefvers, Akad. Forhandl., Stockholm, III, p. 

 221; type Nesotragus moschatus. 



The pygmy antelopes are of diminutive size, about equal- 

 ling a hare, and of rufous or reddish coloration. The tail is 

 short, and the false or lateral hoofs are absent. The ante- 

 orbital gland opens on the side of the face by a single 

 rounded pore. The horns are present in the male only, and 

 are short, not exceeding the head in length, and project 

 straight backward in line with the profile of the snout. 

 They are heavily ringed except at the extreme tip. The 



