1918.] the Birds of the Anglo-Egyptian Sudan. 647 



The birds (rom the Nile above the sudd and from Bahr el 

 Ghazal match exactly one iii the Museum from Gondokoro 

 collected by G. Blaine, and this has been compared by 

 Sclater witli Heuglin^s type of D. malzucii now in the Vienna 

 Museum, which was courteously sent to him for examination 

 some years ago. It is somewhat intermediate between 

 C. n. inexpectata and C. n. strangei of West Africa, but until 

 a general revision of the Grass-Warblers is carried out it 

 may be allowed to stand. 



The birds from the White Nile below Lake No and those 

 from the Blue Nile are slightly paler and less reddish, and 

 can be easily distinguished from West A.frican birds. They 

 agree very well with a topotype of C 71. inexpectata of 

 Neumann collected near Lake Zwai by Zaphiro, except that 

 they are slightly inferior in size, the wings of males in 

 winter averaging 72 ram. against 75 mm. in the Abyssinian 

 bird. 



Both these subspecies have a marked seasonal change of 

 dress (PI. X. figs. 3, 4). The winter birds have backs strongly 

 striped dusky and fulvous, and longer tails averaging 65 mm.; 

 the summer birds have the edges of the feathers grey not 

 fulvous, and the stripes are less defined j tail 55 mm. 



Cisticola lugubris marginata. (PI. X. figs. 1, 2.) 



DrymoLca marginalis ileuglin, SB. Akad. Wien, xix. 1856, 

 p. 274 [nom. nud.] : Bahr el Abiad between 6° and 9° N. lat., 

 i. e. White Nile between Fashoda and Lado. 



Drymoica marginata Heuglin, Ibis, 1869, p. 94, pi. i. fig. 1 

 [founded on above]. 



Cisticola marginalis Hartlaub, Orn. Centralb. 1881, p. 12 ; 

 id. Abhandl. nat. Ver. Bremen, vii. 1881, p. 89 ; Lado 

 (^Emin) [apparently the same species as Heugliu's redescribed 

 as a new species but under the same name] ; Butler, Ibis, 

 1905, p. 333, 1908, p. 229, 1909, p. 82. 



Cisticola blanfordi Hartlaub, Alihandl. nat. Ver. Bremen, 

 viii. Apr. 1883, p. 220 [nom. nov. pro C. marginalis Hartl.]. 



Cisticola hartlaubi Sharpe, Cat. Birds B. M. vii. July 1883, 

 p. 243 [nom. nov. pro C marginalis Hartl.] . 



