268 ZOOLOGICAL EESULTS OP THE EITWENZOEI EXPEDITION. 



Family Oeiolidj;. 

 Oriolus rolleti Salvadori. 



Oriolus rolleti Jackson, Ibis, 1899, p. 595 [Entebbe, Karaassia, Eldoma Eavine, Nancli]; 



1906, p. 568 [Toro]. 

 Oriolus larvatus rolleti Reich. Vog. Afr. ii. p. 659 (1903). 



a. 6 . 120 miles W. of Entebbe, 4200 ft, 8th Dec. [No. 1046. B. C] 



b-e. J 2 . Mokia, S.E. Ruwenzori, 3400 ft., 2nd-18th May. [No. 310. R. E. I). ; 



1477, 1534, 1584. 1). C] 

 f. $ . Mokia, S.E. Ruwenzori, 3400 ft., 19th June. [No. 1646. I). C] 



Iris light red, red, or dark red ; bill flesh-colour, pink, reddish-brown, or brown ; 

 feet grey, dark grey, bluish-grey, or black. 



The male (No. 310) shot on the 10th May is marked by Mr. Dent as being a 

 breeding-bird. It appears to be perfectly adult, but shows scarcely a trace of any 

 yellow colour on the hind-neck, which is only a little brighter than the back. A 

 female (No. 1534) shot on the same date has the yellow collar on the hind-neck well 

 developed (as is the case in all the other birds both male and female), and the feathers 

 of both the mantle and the breast have narrow dusky shaft-streaks. 



[Rollet's Oriole was obtained near Entebbe and was seen occasionally throughout 

 the journey to Ruwenzori. It was not uncommon among the taller acacia-trees on 

 the plains around the south end. — R. B. W.~\ 



Oriolus LuEtior Sharpe. 



Oriolus Icetior Sharpe, Bull. B. O. C. vii. p. xvii (1897) ; id. Ibis, 1898, p. 155 [Gaboon] ; 



Hartert, Nov. Zool. vii. p. 39 (1900) [Fort Beni]. 

 Oriolus larvatus Icetior Reich. V6g. Afr. ii. p. 661 (1903). 



a. 6 . 50 miles north of Fort Beni, Semliki Valley, 3500 ft., 15th Aug. [No. 1783. 

 1). C] 



b. ? imm. Mawambi, E. Congo Forest, 3000 ft., 22nd Oct. [No. 3641. R. B. )V.\ 



c. ? . Mpanga Forest, Fort Portal, 5000 ft., 14th Sept. [No. 3564. R. B. IV.] 



Male. Iris dark red ; bill pink ; feet dark grey. 



Female. Iris dark chestnut ; bill reddish-brown ; feet grey. 



Immature female. Iris light brown ; bill dark brown ; feet grey. 



This Oriole was originally described in the briefest manner from a specimen from 

 Gaboon. It also inhabits the Cameroon district, and has been procured by Dr. Ansorge 

 near Fort Beni. 



A marked difference in plumage between the sexes of this species has hitherto been 

 overlooked and is worth recording. The male, besides having a much wider and more 

 brilliant yellow collar which extends over the mantle, differs from the female in 



