N. Rhodesia and the Katanga District of Congoland. 247 



This bird is widely distributed, though not usually very 

 common. I have more than once seen the males assist a 

 host of insectivorous birds in reducing the numbers of 

 swarming termites. 



320. Penthetria hartlaubi. 



Penthetria hartlaubi Bocage ; Neave, loc. cit. p. 88. 



No. 371. c? in winter. Upper Lualaba It., 4000 ft., 

 Sept. 24, 1907. 



Bill, upper mandible brownish horn-coloured ; feet dark 

 brown ; iris dark brown. 



No. 449. S in summer. Near Serenje, N.E. R., 4500 ft., 

 Dec. 18, 1907. 



Bill black, edges of both mandibles bluish white ; feet 

 black ; iris dark brown. 



No. 453. ? in summer. Near Serenje, N.E. R., Dec. 20, 

 1907. 



Bill pale brownish horn-coloured, slightly paler below ; 

 feet pale brownish ; iris brown. 



No. 512. S i 11 summer. Chambezi Valley, 3500 ft., 

 April 25, 1908. 



Bill black, lower mandible bluish white ; feet very dark 

 brown ; iris dusky. 



No. 571. cf > winter. Luena, N.E. L. Bangweolo, June 17, 

 1908. 



Bill brownish horn-coloured above, blue-grey below; feet 

 dusky ; iris brown. 



No. 575, 576. ? ? , winter. Luena, June 18, 1908. 



Bill pinkish brown, paler below ; feet pale greyish horn- 

 coloured ; iris dark brown. 



Nos. 612, 613. <? <J in winter. Luwingu, July 17, 1908. 



Bill brownish horn-coloured ; feet and iris brown. 



No. 706. c?, intermediate. Kalungwisi R., Sept. 9, 1908. 



Bill brownish horn-coloured, paler below ; feet and iris 

 brown. 



Nos. 754, 755. <$ <$ , intermediate. Near Luena, Oct. 3, 

 1908. 



Bill dusky above, bluish white below ; feet and iris dark 

 brown. 



