1920.] On the Birds of the Anylo-Egyptian Sudan. 781 XXXI.—A List of the Birds of the Anglo- Egyptian Sudan, based on the Collections of Mr. A. L. Butler, Mr. A.

Chapman and Capt. H. Lynes, R.N., and Major Cuthbert Christy, R.A.M.C. (T.F.). Part IV. (concluded). PELECANIDE—STRUTHIONID. By, W., li. Scrarer, M.B.O.U., and C. Macxwortu-Prasgp, M.B.O.U. * (Plate XVIIT.)

Tuts, the fourth portion of the list of the Birds of the Sudan, is the final one of a rather lengthy paper. The previous parts appeared in ‘The Ibis’ of July 1918, October 1918, and October 1919. Since the other parts were printed, more material has come to hand from the Sudan, and nomenclature has in some cases been changed, with thie result that a lst of Addenda and Corrigenda is necessary to bring these parts up to date. We are indebted to Major Claude Graham for some most interesting birds from the Nuba Mountains in Kordofan, notably a pair of the White-capped Chat, Thamnolea albiscapulata, or its local representative.

We have also examined a collection of birds from the Khartoum Museum sent home by Mr. H. H. King, the Sudan Government Entomologist, including one or two species new to the Sudan, and to him (as well as, of course, to the authorities of the Natural History Museum) we are particularly grateful.

For the convenience of readers, we reprint the map of the Sudan (Pl. XVIII.) and also the abbreviations used for the names of the Provinces, which are as follows :— Ber. = Berber Province, R.S. = Red Sea Province, Kas.= Kassala, Sen.=Sennar, B.N.=Blue Nile Province, Kh. = Khartoum Province, Kor. = Kordofan Province, W.N. = White Nile Province, U.N. = Upper Nile Province, B.G. = Bahr-el-Ghazal, Mon. = Mongalla Province, and L.E.= Lado Enclave.

* [Owing to Mr. Sclater’s absence abroad, the junior author is entirely responsible for this Part of the paper—C. W. M. Praep. |]