Expedition to the White Nile. 259 



53. Saxicola aurita (Teram.). 



My specimens are of the form S. amphileuca Hempr. et 

 Ehr. (Symb. Phys., Aves, fol. bb). This Wheatear was fairly 

 conamon and well distributed. It was generally met with 

 along the river-bank. 



Adult. Iris hazel ; bill, legs, and feet black. 



54. Saxicola melanoleuca (Giild.). 

 Black-throated Wheatears appeared to be very rare, being 



seen at Shebesha only, where we obtained specimens on 

 April 26th. 



Adult. Iris hazel ; bill, legs, and feet black. 



55. Terpsiphone cristata (Gm.). 



The only bird of this species seen was an immature male 

 obtained near Khartum on May 15. 



Iris deep violet ; bill violet-black ; legs and feet violet, 



56. Clivicola riparia (Linn.). 



Sand-Martins were everywhere numerous up to our last 

 day's collecting on May 16th. 



Adult. Iris hazel ; bill, legs, and feet black. 



57. Clivicola rupestris (Scop.). 



The only specimen obtained or seen was a solitary bird 

 which haunted the top of Jebel Auli. 



Iris dark hazel ; bill, legs, and feet black. 



58. HiRUNDO RusTicA Linn. 



Swallows were not nearly so numerous as Sand-Martins. 

 In Omrlurman the former were common, and we were assured 

 that they bred regularly in a hut in the doctors' compound. 



59. Caprimulgus eximius Temm. 



We obtained an adult male of this rare and beautiful 

 species at Wad Mariun on May 1.2th. 



So far as I am aware, only four other specimens are known. 

 Three of these were brought home by Riippell, w^ho gives 

 Sennaar as their habitat in his ' Systematische Uebersicht.' 

 Herr Erckel, Riippell's collector during his second expedition, 

 informed Mr. Hartert (see Ibis, 1892, p. 279) that the 

 specimens were killed in 1823 or 1824 by Hey, Riippeirs 



s 2 



