436 



BULLETIN 15 3, UNITED STATES NATIONAL MUSEUM 



meters, those of typical guifsohalito from 84 to 93 millimeters (ac- 

 cording to Van Someren ^ whose figures are higher than the present 

 series). The series examined presents the following size data: 



In contrast to these figures, a male example of ugandae from 

 Butiaba, Lake Albert, measures as follows : Wing 77, tail 44.5, cul- 

 men 19.5, tarsus 20 millimeters. Six other Ugandan males have 

 wings measuring from 79 to 82 millimeters (80.1 millimeters aver- 

 age), and two females have wings of 77 and 80 millimeters, 

 respectively. 



Zedlitz * considers rubHfacies a race of this species, but inasmuch 

 as it comes from the area inhabited by ugandae it must be considered 

 a species. It lacks the red on the chin and throat, and agrees in size 

 with typical guifsohalito. 



Neumann '^ writes that a specimen from Roseires has a much 

 darker red color on the head and throat than birds from Ethiopia. 

 I find no difference in this regard between birds from the two 

 regions. 



Young birds differ from adults in lacking the red on the crown, 

 although they have it well developed on the chin and throat; some 

 have a narrow line of red over the bill and eyes. The two Marshalls, 

 in their Monograph of the Capitonidae, 1871, (p. 17), write that in 

 the Derby Museum, at Liverpool, there is a specimen marked 

 Pogonorhynchus hrucei juv. {=Ly'bius g. guifsohalito) which has 

 the throat brown, " * * * the feathers being lanceolate, and 

 edged witli white, the breast and belly white, barred with brown, the 



2 Nov. Zool., vol. 29, 1922, p. 56. 

 «Journ. f. Ornith., 1910, p. 745. 

 5 Idem, 1904, p. 386. 



