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. $ i 11 winter. Upper Lualaba R., 4000 ft., 
Sept. 24, 1907. 
Bill, upper mandible brownish horn-coloured ; feet dark 
brown ; iris dark brown. 
No. 449. $ 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. $ in summer. Chambezr Valley, 3500 ft., 
April 25, 1908. 
Bill black, lower mandible bluish white ; feet very dark 
brown ; iris dusky. 
No. 571. $, 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. S d> in winter. Luwingu, July 17, 1908. 
Bill brownish horn-coloured ; feet and iris brown. 
No. 706. <?, 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. 
