284 BULLETIN 15 3, UNITED STATES NATIONAL MUSEUM 



remiges are not those of the juvenal plumage but are new feathers. 

 The postjuvenal molt appears to be a complete one. Even in the 

 subadult plumage the innermost remiges vary considerably in dark- 

 ness, producing birds of both the superciliosus and ^ loandae types. 

 Birds in this stage have the rectrices more rounded, less tapering 

 terminally than younger birds. 



The order of molt of the remiges seems rather peculiar, but I have 

 not enough molting material to work it out satisfactorily. A sub- 

 adult female, taken August 5 at Lekiundu Kiver, has the three outer- 

 most primaries of the adult plumage, the next one is immature, that 

 is, barred, while the next, which is only half grown, is adult. An 

 adult bird from Dire Daoua, October 12, has the fourth (from the 

 outside) primary of the left wing only half grown, while the remex 

 on either side of it is fully grown. However, inasmuch as this con- 

 dition is not duplicated in the right wing, it may be that the feather 

 was lost by accident rather than by molt and is being replaced out 

 of season. 



As already mentioned, Sclater suggests that loandae may range 

 north to the lake district of southern Ethiopia. The birds from that 

 region (Lake Abaya, Oato Kiver, Sagon River, etc.) are variable, 

 some being much darker than others, but on the whole are more like 

 superciliosus than loandae^ or at least, more of them are like the 

 former than the latter. 



The white-browed coucal is widely distributed in Ethiopia and 

 Kenya Colony and is the commonest member of its genus in those 

 countries. It appears to be confined to the tropical and subtropical 

 parts of the region and its range overlaps that of G. monachus only 

 locally. The latter is more of a highland, Temperate Zone bird, but 

 occurs around Nairobi where superciliosus is found as well. Blan- 

 ford ^ found the latter abundant on the Libka River and met with it 

 in the Anseba Valley in smaller numbers, but never found it in the 

 Abyssinian highlands, that he traversed. He records measurements 

 of the two sexes of superciliosu.s, but his " female " appears to have 

 been wrongly sexed. Females are larger than males in this species. 

 Neumann ^ met with it chiefly in the vicinity of rivers and lakes, as 

 on the Urga and the Bussijo in Gindeberat Province, and around 

 Lakes Abaya and Gandjule. Erlanger ^ recorded it in Ennia and 

 Arussi-Gallaland, on the route from Harrar to Ginir, in the Hawash 

 region, at Lake Abaya, and on the route from Bardera to Umfudu. 



Judging from the dates of the two nestlings, and from the data 

 presented by Erlanger, the breeding season in Ethiopia appears to 

 be from early April until late May. The two nestlings described 



» Geol. and Zool. Abyss., 1870, p. 315. 

 'Journ. f. Ornith., 1904, p. 380. 

 •Idem, 1905, p. 481. 



