BIRDS OF ETHIOPIA AND KENYA COLONY 



301 



it and from jainesi in lacking any olive wash on the sides, flanks, 

 and abdomen. The three races have been upheld by all workers 

 who have had satisfactory series to study and are therefore probably 

 valid. In regard to the color of the sides and flanks, however, the 

 present series exhibits great variation, which, in turn, suggests that 

 extensive series of coastal birds may minimize the distinctness of 

 Idsinayensk and maiidaniis. A male from the Indunumara Moun- 

 tains has no olive wash at all, but has the sides and flanks pure gray ; 

 a male from Tertale has only a slight extent of olive, while another 

 male from the latter locality has the olive color so strongly developed 

 that, if it be compared with an extremely grayish bird like the one 

 from the Indunumara Mountains, it looks almost distinct enough to 

 be subspecifically separated. There is also some variation in the 

 lightness or darkness of the sides of the head. The size variations 

 of the adults are presented in table 58. 



Table 58. — Measurements of 16 Specimens of Pomatorhynchus jamesi jamesi 



The immature bird taken at Bodessa on May 20 was still attended 

 by its parents and is therefore obviously a juvenal individual. It 

 is not quite fully grown, all the rectrices being still inclosed in their 

 sheaths basally. Inasmuch as the juvenal plumage has never been 

 described, the following notes are of interest: This specimen resem- 

 bles the adults on the upperparts, even to the black median crown 

 stripe and the ocular stripes, but the upper back is slightly darker, 

 more olive-brown than in older birds; the underparts are conspicu- 

 ously darker in the young bird, especially on the breast, upper 

 abdomen, sides, and flanks, which are very dark brownish gray, the 



