6 L. A. Jagerskiold. 



we did not observe it north of Abba Island though undoubtedly 

 it occurred there. 



41. Lophoceros nasutus (L.) bmc. This bird was shot at our 

 southernmost station and observed a little south of Kawa and near 

 el Hobegi between the 6 th cataract and Shendy (on the 2 th of 

 April). It seemed to be rare enough along the White River, at 

 least in comparison with L. erythrorhynchus, and was very shy. 



42. Ceryle rudis (L.). Though not very abundant, this 

 kingfisher must be considered as common along the White River 

 as well as between Omdurman and Shendy. Along the 6 th ca- 

 taract it was very common about the end of May. 



43. Corythornis cyanostigma (Rupp.). This beautiful little 

 kingfisher was only observed near Grebel Ahmed Agha at a 

 backwater fringed with tall reeds. But most likely it also oc- 

 curred in other suitable places along the river. In the middle 

 of the day it was not to be seen but in the evening it began 

 to fish. 



44. Colius macrourus (L.). We found this species tolerably 

 common from a few miles north of Abba Island to the neigh- 

 bourhood of Kaka. It was always seen in small flocks. 



45. Centropus monachus Rtipp. smc. This species was shot 

 now and then in the reed jungles bordering the White River. 

 During the journey I determined with the help of Heuglin's 

 avifauna several specimens to be C. monachus but only one - 

 a female — was skinned. It mesures only 390 mm. in length - 

 culmen"31 mm — and the back and inner scapulars are very dark 

 (thus resembling the var. nigrodor salts). From Centropus sene- 

 galensis it is easily distinguished by the blue gloss of the upper 

 part of the head and of the back of the neck and the dirty 

 white tips of the tail. 



46. Centropus superciliosus Hempr. & Ehr. Though a single 

 specimen of this species was obtained from Mssrs. Rotschild & 

 Wollaston near Shendy, I am inclined to believe it to be bound 

 as a rule to the reed- and ambadj -jungles along the White River 

 where we found it now and then ; but we never observed it be- 

 tween Omdurman and the reed-bordered section of the White River. 



