68 
B. Tail of average length, its terminal half generally more or less 
crested with black. Face-markings present. Females (except in 
G. subgutturosa) with horns. 
a. Upper part of face white (at least in old age), interrupting the central 
facial band. 
a'. No horns in female: size larger. (Central and Western Asia.) 
85. G. subgutturosa. 
b'. Horns present in female: size smaller. (Arabia.) 86. G. marica. 
6. Central dark facial band uninterrupted by white above. Horns present 
in the female. 
a. Dark colour of back not invaded by white of rump. 
a. Dark lateral band indistinctly marked, not strong and blackish. 
a®. Tip of horns slightly curved inwards or upwards, not bent in to 
a right angle. 
a*. Horns of medium length. 
a°. Horns truly lyrate, the middle portion twisted outwards, 
the tips reapproaching each other. (Algeria, Egypt, 
Palestine.) .. =. . 3 4. 2 SiAeGadonaas 
b°. Horns not truly lyrate, more or less evenly diverging 
upwards. 
a°. ‘Top of muzzle ordinarily with a black spot on it. 
a’. Nose simple. — 
a’. Larger: hair rough. (Algeria.) 
88. G. cuvieri. 
68. Smaller: hair smooth: darker. (Arabia.) 
89. G. arabica. 
c8, Smaller: hair smooth: lighter. (India and S. Persia.) 
90. G. bennetti. 
b’. Nose with a flabby corrugated elevation on it. 
(Somaliland.). . .. . \.) 91) (Gespeher 
6°. Top of muzzle without a black spot. (Somaliland.) 
92. G. pelzelni. 
64. Horns long and very slender. Colours very pale. (Algeria 
and Egypt.). . .. . .. . . 98. Gilephocenos 
