308 OTTDro^. 



Ostafr. p. til6, note (1870); Heugl. Orn. N.O.-Afi: ii. pt. 1, 

 p. 954, tab. xxxii. (1873) ; Seebohm, Ibis, 1887, p. 351. 



Adult male. Similar to L. melanogaster, but distinguished by 

 having the lesser back, rump, upper and under tail-coverts, as well as 

 the tail, black. Total length 27 inches, culmen 1-95, wing 13-5, 

 tail 6-7, tarsus 4*7. 



Hah. N.E. Africa, ranging into South Africa. 



a. Ad. sk. South Africa. D. W. Mitchell, Esq. [P.]. 



8. TRACHELOTIS. ^^^ 



Tmchelotis, JReichenb. Syst. Av. pi. xxxi. fig. 7 (1849). T. caerulescens. 

 Range. Tropical Africa. 



Key to the Species. 



a. With slaty blue on the outer wing-coverts and 



the primary-coverts. 

 a . Under surface of body slaty blue ; under 



tail-coverts sandy buff, the longer ones 



slaty blue ccenilescens, p. 308. 



6'. Under surface of body white ; the long 



under tail-coverts sandy buff, barred with 



blackish and minutely freckled with sandy 



buff canicoUis, p. 309. 



b. Outer wing-coverts sandy nrfous : primary- 



coverts tawny with blackish tips. 



c. With a broad band of bluish grey on the hind 



neck; back pale brown, finely vermiculated 



with sandy bufi" senegalensis, p. 310. 



c'. Hind neck bright rufous, not grey ; back 



darker and more coarsely vermiculated . . barrovii, p. 311. 



1. Trachelotis caerulescens. 



Otis caerulescens, Vieill. Erw. Meth. i. p. 334 (1820) ; Temm. PI. 

 Col. V. pi. 532 (1832) ; Gray, List Grallce in Brit. Mus. p. 56 

 (1844) ; Schl. Mus. Pays-Bas, Cursores, p. 4 (1865) ; Gurney, Ibis, 

 1868, p. 48 (Natal) ; Sharpe, ed. Layard's B. S. Afr. p. 638 (1884) ; 

 W. Ayres, Ibis, 1887, p. 61 (Potchefstroom, Middleburg). 



Otis veroxii, Smith, S. Afr. Q, Journ. no. v. p. 15 (1831 : nomen 

 nudum). 



Otis ferox, Smith, teste Gi-ay, List Gralla Brit. Mus. p. 56 (1844). 



Otis cana, Licht. MSS. teste Gi'ay and Bonaparte. 



Eupodotis caerulescens. Gray, Gen. B. iii. n. 533 (1845) ; Licht, 

 Nomencl. p. 88 (1854) ; Layard, B. S. Afr!^. 285 (1867 : Rivers- 

 dale ; Hanover ; E. Cape Colony) ; Grai/, Hand-l. B. iii. p. 8, 

 no. 9933 (1871) ; Buckley, Ibis, 1874, p. 385 (Transvaal). 



Trachelotis caerulescens, Reichenb. Handb., Gall. tab. cclv. fig. 2173 

 (1844) ; Bp. C. R. xliii. p. 416 (1856). 



Adult male. General colour above sandy buff, minutely freckled 

 with blackish wavy lines or irrorations ; the lower back, rump, and 



