1918.] the Birds of the Anglo-E<pjpt'ian Sudan. 423 



temperature, which, as tiie equatorial belt is approaclied, 

 become comparatively negligible. 



List of Species. 



The references and synonymy have been cut down as much 

 aspossible. Reference to the original description of the species 

 is given in all cases where it is not obviously stated in the 

 text-book cited, and also one to Shelley's ' Birds of Africa' 

 or Reichenow's ' Vogel Afrikas,' and in the case of palpearctie 

 migrants to Hartert's ' Vogel paliiarktischen Fauna.' 



A list of specimens in each of the three collections worked 

 over is given^ and the localities mentioned are all arranged 

 according to the administrative Provinces into which the 

 territory has been divided, and we hope all the localities 

 will be found marked on the map (PI. IX.). 



The names of the Provinces have been abbreviated as 

 follows : — 



Ber. = Berber Province, E.S. = Red Sea Provijice, 

 Kas. = Kassala, Sen. = Sennar, B.N. = Blue Nile, Kh. = 

 Khartoum Province, Kor. = Kordofan, W.N. — White Nile 

 Province, U.N. = Upper Nile Province, B.G. = Balir el 

 Ghazal, Mon. = Mongalla Province, and L.E. = Lado Enclave. 



Tlie last-namedj formerly part of the Belgian Congo, is, 

 so far as its northern half is concerned, a portion of the 

 Mougalla Province ; the southern half south of Nimule 

 forms part of the Nile Province of the Uganda Protectorate, 

 and is outside our limits. 



We hope with the concluding instalment to give a few re- 

 marks on the general relationship of the fauna of the Sudan, 

 but it seems better to defer this until the work is completed. 



The new forms described in the present instalment are as 

 follows : — 



Estrilda astrild gaboonensis, nom. n. pro E. rubriventris 



Sharpe & Shelley nee Vieill. : Gaboon. 

 Anoma/ospiza hutleri, sp- n. 



Serinus mozambicus tando, subsp. n. : from Angola. 

 Serinus mozambicus aurifi'ons, described for the first 

 time though named by Henglin in 1856. 



SIK. X. — VOL. VI. 2 H 



