426 Messrs. Sclater and Mackworth-Praed on [Ibis, 



Cormltur crassirostris. 



Corvus crassirostris Rilpp. N. Wirb. Yog. 1835, p. 19, 

 pi. 8 : Abyssiuia. 



Corvultur crassirostris (Riipp.) ; Shelley, B, A. v. p. 138. 



The Thick-billed Raven occasionally Avanders over the 

 eastern boundary o£ the Sudan from the mountains of 

 Abvs?iuia. It is reported from Famaka, south of Roseires, 

 by Hartmaun (J. f. O. 185-4, p. 33.2), and from Galabat by 

 Heuglin (Orn. N.O.-Afr. ii. p. 507). It does not seem 

 to have been recorded since. 



Family Dicrurid^. 



Dicrums adsiinilis divaricatus. 



Muscicapa divaricata Lichtensteiii, Verz. Doubl. 1823, 

 p. 52 : Senegambia. 



Dicrurus adsiinilis divaricatus (Licht.) : Oberholser, Proe. 

 U.S. Nat. Mus. xxviii. 1905, p. 920. 



Dicrurus afer apud Shelley, B. A. v. 1912, p. 172; Butler, 

 Ibis, 1905, p. 326, 1908, p. 224, 1909, p. 80. 



[B. coll.] 1 Fachi Slioya Nov., 2 Jebelein May, W.N. ; 



1 Roseires Aug. Sen. : 1 Chak Chak Feb., 1 nr. Tonj 



river Jan.. 1 Tembura Mch. E.G.; 1 Sheikh Torabe, 



Mon. 



[C.&L. coll.] 2 Kamisa Dec, 1 Singa Dec. Sen. ; 1 nr. 



Meshra Zeraf Jan., 1 Malakal Jan. U.N. 

 [Chr. coll.] 1 Mt. Baginzi Mch. E.G. ; 5 Yei Nov. Dec. 



I.E. 

 This form of the larger Forked-tailed Drongo only differs 

 from the South African typical race in its smaller size, and 

 Avas first clearly distinguished by Oberholser. It appears to 

 be common throughout the Sudan, and extends westwards 

 to Senegambia and southwards through East Africa to the 

 Transvaal, where it iutergrades with the large typical form. 



Family Oriolid^. 

 Oriolus oriolus. 



Coracias oriolus Linn. Syst. Nat. 10th ed. 1758, p. 107 : 

 Sweden. 



