40 ]\Ir. E. Scliwarz on new 



to have a similar reason as the dark colour in the Sudan 

 A. k. hucotis and Onotragus maria, which is a dark form of 

 the Lichi, Onotragus leche. 



Gazella rujifrons knnuri, subsp. n. 



Type locality. Gulfei, Lower Shari. 



Type. S ^^' Senckenberg Museum. Journal nos. 1037 

 (skin) , 696 (skull) . Original no. 12. Collected February 9th, 

 1911, by O. Koder. 



A small race of G. rufifrons allied to G. r. hasleri, Pocock, 

 from Kano, N. Nigeria, but slightly more brownish. 



Colour of mantle near " cinnamon '*' (323.2, Rep. de Couh), 

 forehead darker (323.4) ; flanks slightly darker and duller, 

 thiglis distinctly paler than *'buff " (309.1) ; pale facial stripe 

 rather broad ; lateral stripe brownish black. 



Skull. Distinguished by tlie narrow orbits, long rostrum, 

 and narrow palate. Horns narrow, only expanded at tip. 



Dimensions of type skull. Basal length 180 mm.; palatal 

 length 199; postorbital width 86; zygomatic width 75"5 ; 

 nasals 39'7x 23 8 ; orbit to gnathion 105 ; length of upper 

 tooth-row 58*0 ; horns, length on outer curve 269, greatest 

 width 112. 



This gazelle is readily distinguished by its pale colour and 

 the shape of its skull and horns. G. r, hasleri, from Kano, 

 is more reddish, and G. r. centralis is much darker and has 

 much more projecting orbits. 



Gazella rufifrons centralis, su])sp. n. 



Type locality. Magretta, near Mclfi, Bagirmi. 



Type. S ad. Senckenberg Museum. Journal no. 091. 

 Original no. Sch. 206. Collected April 8th, 191 1. (Skull.) 



A dark form with strongly projecting orbits. 



Colour of mantle near " cinnamon " (323.4) ; forehead not 

 darker; flanks pale "cinnamon" (323.1) and thighs exactly 

 the same colour ; lateral stripe dcc}) black. 



Skull. At once characterized by the very strongly pro- 

 jecting orbits and short narrow muzzle. Palate rather 

 broad. 



Horns of medium length, diverging nearly from base and 

 distinctly expanded at tips. 



Dinu'usions of type skull. Basal length 185 mm. ; palatal 

 length 201 ; postorbital width 97"3 ; zygomatic width 82'9 : 

 nasals 51.'lx30'0; orbit to gnathion 1 10 ; length of upper 

 to()th-r(jw 59 4 : horns, length on outer cuivc 253, greatest 

 width 139. 



