694. Otis rueppelli. Biippell's Knorhaan. 



Otis rueppelli, Wahlb. Journ. Ornitli. 1857, p. 1 ; Finscli & HartL, 



Vog. Ost-Afr. p. 619 (1870); Sharpe, ed. Layanl's B. S. Afr. p. 



643 (1884) ; FlccJc, Journ. Ornitli. 1894, p. 385; Eeichenoiv, Vog. Afr. 



i, p. 252 (1900). 



Otis picturata, HartL P. Z. S. 1865, p. 88, pi. vi. 



Eupodotis rueppelli, Gurney in Andersson's B. Damaral. p. 259 (1872). 

 Heterotetrax rueppelli, Sharpe, Cat. B. M. xxiii, p. 297 (1894) ; Shellei/, 



B. Afr. i, p. 185 (1896). 



Description. Adult. Like the previous species (0. vigor si) but 

 much paler and with a good deal of blue-grey on the head ; sides 

 of the neck also blue-grey, divided by a broad line of black, extend- 

 ing on to the fore neck and joining the black patch on the centre of 

 the throat ; sides of the face mostly white, a patch of white on the 

 cheeks extending backwards and joining below the black patch, the 

 latter united to a narrow eyebrow ; ear-coverts with a black patch ; 

 below from the fore neck downwards white, including the under 

 wing-coverts and quill lining. 



Iris pale grey varied by dark brown ; legs and toes dirty yellow. 



Length about 20 ; wing 12-5 ; tail 5-3 ; tarsus 3*3 ; culmen 1-6. 



Distribution. Euppell's Knorhaan appears to take the place of 

 the Vaal Knorhaan in German South-west Africa, where it is plen- 

 tiful in Great Namaqualand and Southern Damaraland according 

 to Andersson. North of the Cunene it was obtained by Monteiro 

 in the littoral region of Angola and was described by Hartlaub 

 under another name. 



The only definite localities are those given by Fleck : Tsoaxoub 

 and near Usab or Urab, both on or near the Swakop River in 

 Central Damaraland. 



Habits. Andersson states that this species "is partial to 

 slightly undulating ground abounding in boulders and loose stones ; 

 it is usually found in pairs. When disturbed it utters a succession 

 of quick, harsh notes, and crows not unlike a Corn Crake on taking 

 wing but in a much louder strain." According to Fleck it is by no 



means a shy bird. -*? 



't^ fa 



695. Otis ludwigi. Ludivig's Paauw. 



Otis colei, Smith, S. Afr. Quart. Journ. i, no. 5, p. 15 (1831) [nom. 



nudum] . 

 Otis ludwigii, Eupp., Mus. Senck. ii, p. 223, pi. 14 (1837); Sliarpe, ed. 



Layards B. S. Afr. pp. 636, 854 (1884) Nicolls and Eglington, 



Sportsm. S. Afr. p. 114 (1892) ; Bendall, Ibis, 1896, p. 175 ; Shelley, B. 



Afr. i, p. 185 (1896) ; Reiclienow, Vog. Afr., i. p. 246 (1900). 



