1918.] the Birch of the Anglo-Egyptian Sudan. 635 



Laniarius erythrogaster. 



Laniar'ms erythrugasttr (Cretzschm.); Sclater in Shelley's 

 B. A. V. p. 3.25; Butler, Ibis, 1905, p. 329, 1908, p. 227, 

 1909, p. 81. 



[B. coll.] 1 Gallabat May, Kas ; Rank Mcli., Jebel 

 Ahmed Aga Feb., Taufikia Feb., Lake No June, 

 U.N.; Chak Cliak Feb., Atwot Jan, Wau Mch. B.G. ; 



2 Mongalla. 



[C. & L. coll.] 2 Kamisa Dec. Sen. ; 1 nr. Lake No, Feb. 



U.N. 

 [Chr. coll.] 2 Wau July-Aug. B.G. 

 A common species. 



Dryoscopus gambensis malzacii. 



Drijoscopus malzacii (Heugl.) ; Sclater in Slielley's B. A. 

 V. p. 346 (part); Butler, Ibis, 1908, p. 226, 1909, p. 81. 

 [B. coll.] 1 Ukanda Jan., 3 Chak Chak Feb. Mch., 

 1 Terabura, 1 Kojali Mch. B.G. ; 1 Mongalla Feb. ; 



3 Lado, 2 Rejaf Feb. L.E. 



[Chr. coll.] 5 Meridi Jan. Feb., 2 Yanibio, 3 Mt. 

 Baginzi Mch., -1 Wau July Aug. B.G. 



Dryoscopus gambensis erythrese. 



Dryoscopus malzacii erythreas Neumann, J. f. O. 1899, 

 p. 412 : Salamona, Eritrea. 



[B. coll.] 4 Roseires July Aug., 1 Jebel Fazogli May, 

 Sen. 



[C. & L. coll.] 1 Kamisa Dec. Sen. 



We have examined the material in the British Museum of 

 the forms of D. gambensis. Our conclusions only differ from 

 tliose arrived at by the senior author in his revision of 

 the group in the fifth volume of Shelley in regarding the 

 Abyssinian and Blue Nile forms as distinct from that of the 

 White Nile valley and westwards. We regard Dryoscopus 

 angolensis and D. cubla each with several races as forming- 

 quite distinct groups. The races of D. gambensis can only 



