386 Lieut. C. W. Mackworth-Praed on [Ibis, 



according to Ogilvie-Grant in the Report of tlie Ruwenzori 

 Expedition, C. massaica occupies the lower ground up to 

 6000 ft. and C. n. keiiya ranges from 7000-10,000 ft. The 

 question then arises: "Is it possible to maintain a 'geo- 

 graphical ' race on a difference of 1000 ft. or so in 

 elevation?" I should personally consider it a better 

 division than mere distance; but it is a point of interest. 

 As, however, C. massaica is so distinct from C. natalensis , 

 it would appear to be best to regard it as a separate species. 



Muscicapa caerulescens. 



/ii(/a/}s carulesce/is Hartlaub, Ibis, 18G5, p. 268 [Natal]. 



Miiacicnpa C(eridescens O. -Grant, Ibis, 1917, p. 85. 



(J ad. Ithanga Hills. 2ad October. Wing 81 mm. 



Iris dark brown ; bill and legs dark. 



Dioptrornis fischeri. 



Dioptrornis JLsc/ierl Reichw. J. f. O. 1884, p. 53 [Meru 

 Mts., Massai]. 



? , Nairobi. 22nd August. Wing 90 mm. 

 Iris dark brown; bill blue ; legs black. 



Bradyornis muriims. 



Brtu/i/ornis miirinus Hartl. & Finsch, Vog. Ost-Afr. iv. 

 1870, p. 866 [Kakonda] ; Ogilvie-Grant, Ibis, 1913, 

 pp. 634, 636. 



S. Thika. 26th August. Wing 95 mm. 



2 . ,, 29th August. „ 102 mm. 



(J imm. ,, Ist September. ,, 91 mm. 



Iris dark brown; bill and legs black. 



Very common on one small piece of ground at Thika ; 

 not seen elsewht^re. 



Melaenornis ater tropicalis. 



Melanornis aUr tropicalis Neum. J. f. O. 1900, p. 256 

 [S. Ukamba]. 



? . Tsavo River. 27th July. Wing 102 ram. 



Iris dark brown ; bill and legs black: 



This species was not uncommon on the Tsavo, keeping 

 very much in the bushes. 



