8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



breadth, 125 ; nasals, 234 ; breadth of horn pedicle, 95 ; length of 

 horn pedicle from orbit to bifurcation, 143 ; length of upper tooth 

 row, 105 ; distance from first premolar to premaxilbe tip, 144. 



This race is lighter and more yellowish in color than any of the 

 other races of lelwel. The skull differs considerably from jacksoni 

 by its longer nasal bones and upper tooth-row. The horns differ, 

 further, in that their tips are parallel or turn inwards, as in niediecki; 

 not outwardly, as in jacksoni. The horns are decidedly straighter 

 in profile than in jacksoni the angle made by the tips being much 

 more obtuse. On the west bank of the Nile we meet with the typical 

 lelwel which has similar horn and skull-characters, but has exten- 

 sive black markings about the hoofs and legs, the black on the fore- 

 feet being continued as a broad stripe from the hoof-bands to the 

 knees. 



In the genus Damaliscus we find a considerable difference in the 

 shape of the horns in the different forms of the topi, on the one 

 hand, and in the bontebok of South Africa on the other, but the 

 skull-differences between these species are quite slight. This is, 

 however, by no means the case with the peculiar East African species 

 known as Damaliscus hunteri. The shape of the skull and horns 

 and the coloration in this species are so different from those of the 

 other members of the genus, that it seems necessary to separate it 

 generically from the latter in order to avoid confusion. It is, there- 

 fore, described below as the representative of a new genus. 



BEATRAGUS, new genus 



Type ; Damaliscus hunteri Sclater. 



Characters. — Nasal bones long, reaching as far posteriorly as the 

 anterior edge of the orbits, acutely pointed at frontal contact ; lach- 

 rymal bone with its facial portion projecting forward along the 

 nasal suture as a narrow, acutely-pointed process; infraorbital 

 foramen divided ; knobbed processes on basioccipital at basisphenoid 

 suture small ; lower premolars only two ; horns wide spread at base, 

 U-shaped ; color characters, a white tail and white interorbital bar 

 across forehead. 



Damaliscus differs from Beatragits chiefly in the shorter nasal 

 bones (which stop well in advance of the orbits and end obtusely or 

 are truncated), the shorter lachrymal bone, single infraorbital fora- 

 men, and the presence of the three lower premolars. 



To some degree this genus is intermediate between Bubalis and 

 Damaliscus, especially as regards the elongate nasal bones, but the 



