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



[C. & L. coll.] 1 20 miles above Sennar Jan., 1 Kaniisa 

 Dec. Sen. ; 1 Kaka Jan., 1 Kodok Jan , 1 mouth o£ 

 Zeraf river Mcli. U.N. 

 [Cbr. coll.] 1 Wau July, B.G. 



Widely distributed south of Khartoum on Blue Nile^ 

 White Nile, etc, its range largely coinciding with that of 

 the Doleib Palm, its favourite tree {A. L. B,). 



Hierofalco cherrug cherrug. 



Faico cherrug Gray in Hardwicke's 111. Iiid. Zool. ii. 

 1833-31, pi. 25 : India. 



Falco cherrug cherrug Hartert, Vog. pal. Faun. p. 1059. 



Falco sucer auct., Butler, Ibis, 1905, p. 362. 



[B. coll.] 3 Khartoum Nov. & Dec. 



The Saker Falcon seems a rare winter visitor to the 

 Sudan. Mr. Butler notes it as mainly occurring in the 

 northern Sudan, but he saw one pair at Kajo Kuji in 

 the Lado Enclave. 



Tinnunculus tinnunculus tinnunculus. 



Falco tinnunculus Linn. Syst. Nat. 10th ed. 1758, }). 90 : 

 Europe, restricted type-locality : Sweden. 



Falco tinnunculus tinnunculus Hartert, Vog. pal. Faun, 

 p. 1082. 



Tinnunculus alaudarius and Cerchneis tinnunculus Butler, 

 Ibis, 1905, p. 365, 1908, p. 251. 



[B, coll.] 5 Khartoum Feb. Mch. & Dec; 1 Kajo Kaji 

 Mch. L.E. 



[C\ & L. coll.] 1 Sinkat Mch. R.S. ; 1 Senga, 1 Sennar 

 Dec. Sen. ; 1 White Nile lat. 15° N. Jan. W.N. ; 

 1 Jebel Ahmed Agha Jan., 1 near Lake No Feb. U.N. 



[Chr. coll.] 2 Meridi Feb. E.G. 



It appears to us that all the Sudanese specimens before 

 us belong to the typical European form, which, of course, is 

 only a winter migrant to the Sudan. T. t. rupicolcpformis 

 from Egypt, so far as we know, does not occur in the 

 Sudan, though we have very little material from the north 

 of the country. It has distinctly a more reddish tinge on 



