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



Xiphidioptenis albiceps. 



VaneUus alhiccps Gould, P. Z, S. 1834, p. 45 : Quorra 

 River, i. e. Niger. 



Xiphidiopterus al/j'iceps Reichw. V. A. i. p. 192 ; Butler, 

 ibis, 1909, p. 90. 



[B. coll.] 1 Kojali Mch. E.G. 



Apparently a rare birrl. 



Afriljyx senegallus senegallus. 



Parra seiwyaUus Linn. Syst. Nat. 12tli ed.i. 1766, p. 259: 

 Senegal. 



Lobivanellus senegallus Reichw. V. A. i. p. 193 ; Butler, 

 Ibis, 1905, p. 394, 1908, p. 261. 



[B. coll.] 2 Malakal May, U.N. ; 1 near Bor Jan. Mon. 



[C. & L. coll.] 6 near Tonga Feb. U.N. 



[Chr. coll.] 1 Yci Dec. L.E. 



Coninioii. Neumann (O. M. 1914, p. 9) lias described as 

 A. s. major a race from the highlands of Abyssinia, which 

 differs fi'om the typical form by its larger size, wing 238- 

 258 mm. against 210-230. 



Our own specimens measure 220-235, the average being 

 230. 



Sarciophorus tectus. 



Charadrms tectus Bodd. Tabl. PI. Eul. 1783, p. 51 : 

 Senegal. 



Sarcioplioriis tectus Reichw. V. A. i. p. 189 ; Butler, Ibis, 

 1905, p. 395, 1908, p. 261, 1909, p. 90. 



[B. coll.] 1 Sherif Yakub A pi. B.N. ; 1 Tawela Dec. 

 U.N. ; 2 Mongalla "summer," Mon. 



[C. & L. coll.] 2 Kamisa Dec. Sen.; 1 Jebelein, 1 mouth 

 of Sobat River Jan. U.N. 



Found throughout the Sudan. 



Hoplopterus spinosus. 



Charad^'ias spinosus Linn. Syst. Nat. 10th ed. 1758, 

 p. 151 : Egypt. 



Hoplopterus spinosus Reichw. V. A. i. j). 186 ; Butler, Ibis, 

 1905, ]). 395, 1908, p. 261, 1909, p. 90. 



