636 Messrs. Sclater and Mackwortli-Praed on [Ibis, 



Lybius tridactylus. 



Loxia tridactyla Gmeliii, Syst. Nat. i. pt. ,2, 1789, p. 8()G ; 

 Abyssinia. 



Lybius ti'idactylus (Gm.) ; lleicliw. V. A. ii. p. 124. 



Li/bius abyssinicus (Lath.) ; Butler, Ibis, 1908, p. 246, 

 1909, p. 88. 



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

 May, Sen. ; 1 Ar(lcl)ba Jan. B.G. ; 1 Mongalla, 3 Bor 

 May, 1 Kenisa May, 3 Sheik Tombe Jan. May, 

 4 Gigging Oct. Mon. 



[Chr. coll.] 4 Yei i\ov. Dec. L.E. 



We agree with Grant (Ibis, 1915, p. 438) in not recog- 

 nizing L. t. ugandcB Berger (O. M. 1907, p. 201 : Nimule, 

 Mon.). Our birds do not differ appreciably from the Abys- 

 sinian typical form. 



Lybius vieilloti vieilloti. 



Pogonias vieilloti Leach, Zool. Misc. ii. 1815, pi. 97 . 

 Africa — probably Abyssinia. 



Melanobucco vieilloti (Leach) ; Butler, Ibis, 1905, p. 358. 

 Lybius vieilloti (Leach) ; Butler, Ibis, 1908, p. 246, 1909, 

 p. 88. 



[B. coll.] 5 Roseires Apl. July Aug. Sept. Sen. ; 1 El 



Ein Mch. Kor. ; 1 Kaka Fel)., 1 Jebel Ahmed Agha 



Jan. U.N. ; 1 Gardain Moyen Jan., 1 Chak Chak 



Feb., 2 Raffali Feb. Mch., 1 Wau Apl. B.G. 



[C. & L. coll.] 5 Kamisa Dec. Sen. ; 3 Jebel Alimed 



Agha Mch. U.N. 

 [Chr. coll.] 5 VVau July Aug. B.G. 



Ogilvie-Grant pointed out (Ibis, 1902, p. 426) that the 

 West African race of this bird had considerably more red 

 on the underparts and breast than Abyssinian and Sudanese 

 examples, and could be distinguished under the name 

 L. V. rubescens (Temm.). We follow him also in believing 

 that Leach's type came from Abyssinia. 



Tricholaema diademata diademata. 



Pocjovorhynchns diadematus Heugliii, Ibis, 1861, p. 126, 

 pi. 5. fig. 3 : West of Bahr el Abiad, between 7° and 8° N. 



