1919-] if>^^ Birds of the Angh-Egyjitian Sudan. 671 



Sharpe, Ogilvie-Graiit, M earns, and Claude Grant. Halcyon 

 cyanoleucus from South Africa is distinguislied by its bluish 

 head and the black line being continued over the ear-coverts 

 behind the eye; while H. seneya/ejisis from northern West 

 Africa has a more or less dusky head, and is without the 

 black line behind the eye. 



The range of H. senegalensis extends from northern 

 Angola to Senegal, the southern birds having duskier 

 crowns, and possibly distinguishable as H. s. fuscopi/eus 

 Reichw. ; the range of H. cyanoleucus extends from south 

 Angola and Damaraland through the Transvaal and north- 

 wards (but not to Natal), and both the forms are found 

 mingled in Uganda, the interior of British East Africa, the 

 Sudan, and Eritrea. Whether under these circumstances 

 we should call them subspecies or species must be de- 

 termined later. We have little doubt that they interbreed. 



Of the birds before us six, from south of Lake No, appear 

 to be indistinguishable from typical South African H. 

 cyanoleucus. 



Tiiere are also birds in the Museum collection from the 

 White Nile below Lake No, and one from Tonga in the 

 present collection, which are apparently typical or nearly 

 typical H. senegalensis. 



We are of the opinion therefore, that while there are two 

 definite species in their respective type localities, in the 

 Sudan they cannot be invariably distinguished. 



Halcyon chelicuti. 



Jlcedo chelicuti Stanley in Salt's Abyss. 1814, p. Ivi : 

 Chelicut, Abyssinia. 



Halcyon chelicuti Reichw. V. A. ii. p. 271. 



Halcyon chelicutensis Butler, Ibis, 1905, p. 356, 1908, 

 p. 24-3, 1909, p. 86. 



[B. coll.] 1 Fazogli, May, Sen. ; 2 Kaka Feb. & May, 

 U.N. ; 2 Gigging May, 1 Sheik Tombe " summer," 

 Mon.; 1 Chak Chak, Feb. B.G. ; 1 Kajo Kaji, Mch. L.E. 



[C, & L. coll.] 2 Kamisa Dec. Sen. 



[Chr. coll.] 2 Mt. Bagnizi Mch. B.G. ; 5 Yei Nov. & 

 Dec. L.E. 



