l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



NYALA, new genus 



Type ; Tragelaphus angasi Angas. 



Characters. — Orbit small; facial portion of lachrymal bone long 

 and narrow ; lachrymal-nasal sinus small ; nasal processes of pre- 

 maxillae broad at the tips ; nasal bones notched at tip on the outer 

 border, horn whorl open, short, three-fourths of a turn ; male with 

 heavy dorsal and throat manes and spotted coloration ; female with 

 transverse white body stripes. 



In Tragelaphus we find a lachrymal bone which is widest along 

 its maxillary suture, its width on the orbital rim being much less, 

 the nasals also differ by having the terminal notches or clefts central, 

 the nasal processes of the premaxillse are more slender and attenuate 

 at the tips and the orbit is larger than in Nyala. The most closely 

 allied genus is Limnotragus which shares the small orbit, narrow 

 lachrymal bones and short, open-whorled horns. The long throat- 

 mane of the male suggests Strepsiceros, as do also the transverse 

 white body-stripes of the female, which, however, are lacking in the 

 male whose light spots have the characteristic Tragelaphus arrange- 

 ment. The gregarious habits of the Nyala show further affinity to 

 Strepsiceros. 



