— 145 - 



of Victoria Nyanza. The specimen from Lake Naiwasha is in 

 fresh plumage with a pale blue gloss both on the upper and 

 lower -parts. On the other hand all those from Mombasa, shot 

 4 days later, are in moult and have very worn and faded dresses 

 with a very faint or no gloss. 



The two specimens from Mombasa (September) are in full 

 dress with a beautiful blue gloss. Bannerman (Ibis 1920, 

 p. 443) mentions, as a character for the race, that "the upper 

 parts are glossed with blue", and Reichenow (Vog. Afr. II. 

 p. 647) also says that the "lower parts are duller with less 

 gloss". But both the individuals before me have as a beautiful 

 gloss on the lower parts as on the upper. 



The young bird has pale brown or brownish white edgings 

 to the feathers (Reichenow op. cit.), (v. S o m e r e n , Ibis 

 1916, p. 398). The feathers of the head, back, under surface 

 and wing coverts are white- ed^ed, Further, the wing-feathers 

 are considerably lighter than in the adults, and the inner -web 

 is greyish white. 



[For further remarks on the "Additions".] 

 Wing, tarsus, 



116, 122, 122, 122, 123 mm. 19—20 mm. cfd* ad. 



115, 117, 118, 119 mm. 19—20 mm. 99 ad. 



122 mm. 20 mm. juv. 



Irides red-reddish brown; bill and legs black. 



Oriolidae. 



Oriolus auratus Vieill. — Rchw. II. p. 655. 

 1 (5 ad. 29. 4.; 1 Q ad. 27. 4. Mombasa. 



Of this Oriole I have two specimens from Mombasa. They 

 were shot in a clump of trees in the neighbourhood of the town. 



I must place these specimens under the above-mentioned 

 inasmuch as the outer tail-feathers have an entirely black 

 outer-web. Reichenow (op. cit.) states as the main character 

 of 0. auratus, that the outer tail-feathers are black at the 

 base, but Neumann (J. f. 0. 1905, p. 232) says of a cf speci- 

 men from Omo, that it had only a trace of black on the inner- 

 web of the outer tail-feathers and could just as well be an 0. 

 notatus Ptrs. In that case the character of 0. auratus is 

 slightly minimised. The former should, as a rule, have pure 

 yellow outer tail-feathers, and according to Neumann every 

 specimen not having this character might just as well be either 

 the one or the other. 



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