72 Mr. J. H. Gurney on Birds 



of coloration above referred to, it has the wing nearly half an 

 inch (•JjS) shorter. 



42. Halcyon senegaloides, Smith. Mangrove King- 

 fisher. 



43. Merops pusillus (Miill.). Rufous-winged Bee-eater. 

 *44. Merops nubicus, Gmel. Nubian Bee-eater. 



^45. CossYPHA natalensis. Smith. Natal Chat-Thrush. 



The specimen sent, which appears to be adult, does not 

 show the " external border of pale orange " to the secondaries 

 mentioned in the description of this species given in Sharpe's 

 Layard, p. 224. 



46. Crateropus rubiginosus, RUpp. Rufous-breasted 

 Babbler. 



47. Oriolus larvatus, Licht. Masked Oriole. 



The sex of the specimen sent is doubtful, as in this species 

 the sexes, when fully adult, differ very slightly, if at all, in 

 plumage {vide Ibis, 1879, p. 399) ; but it is smaller than 

 either of two dissected females from Transvaal, with which I 

 have compared it ; the following are the comparative mea- 

 surements : — 



Culmen. Wing. Tarsus, 



in. in. in. 



Mombasa 0-90 6-00 090 



Transvaal, $ . . . . 0-95 5-60 1-00 



Transvaal, $ . . . . l-QO 5-70 105 



The observations of M. Barboza du Bocage as to the varia- 

 tions of size in this species, in his ' Ornithologie d' Angola,' 

 vol. i. p. 329, may be consulted with advantage. 



48. POMATORHYNCHUS ERYTHROPTERUS (Shaw). RufoUS- 



winged Bush-Shrike. 



*49. Dryoscopus sublacteus, Cassin. Cassin's Bush- 

 Shrike. 



50. BucHANGA ASSiMiLis (Bcchst.). Muslcal Drongo. 



