1920.] the Birds of the .\ii(jJo-E[/ijptian Sudan, 823 



Sterna (Thalasseus) bergii velox. 



Sterna velox Cretzsclimar in RuppeH's Atlas, ii. 1827, 

 tab. 13, p. 21 : Coasts of the Red Sea. 



Sterna bergii apud Butler, Ibis, 1909, j). -403. 



[B. coll.] 2 Port Sudan May, K.S. 



Ml-. Mathews has given a revised list of the races of this 

 Tern ('Birds of Australia,^ ii. pp. 346-347), and, as regards 

 the Red Sea form, an examination of the material in the 

 Museum bears out his suggestions. 



There is as yet no definite record from within our limits 

 of the Sandwich Tern, Sterna [Thalasseus) sandvicensis 

 sandvicensis, but it occurs freely in the Red Sea and will 

 doubtless he included at some future time. 



Sterna (Thalasseus) bengalensis arabica. 



Thalasseus bengalensis «/7//0if.ws Mathews, Birds of Australia, 

 ii. 1912, p. 355. 



Sterna media Horsf. et auct. ; Reiehw. V. A i. p. 60 ; 

 Butler, Ibis, 1909, p. 403. 



Smaller and lighter than the typical race, lAIr. Mathews 

 shows that 8. media of Horsfield is preoccupied as a name 

 for the typical race, as is also S. affinis of Cretzsclimar for 

 this one. , 



Family Podicipediu^. 



Podiceps ruficollis capensis. 



Podiceps capensis Salvadori, Ann. Mus. Civ. Gen. (2) i. 

 1884, p. 252 : South Africa. 



Culymbus capensis Reichvv. V. A. i. p. 18. 



Mr. Butler states that the African Little Grebe occurs on 

 both Niles, but is not numerous. 



Family Rallid^e. 

 Porzana porzana. 



Rallus porzana Linn. Syst. Nat. 12th ed. i. 1766, p. 262 : 

 Europe, restricted type-locality France. 



Ortygometra porzana Reiehw. V. A. i. p. 283. 



