59. AMBLTOSl'IZA. 503 



coverts white, with dark brown centres to the feathers ; under wing- 

 coverts and axiliaries uniform pale tawnj' butf, whiter near the edge 

 of the wing ; quills below dusky brown, ashy isabelline along the 

 inner web : " bill greenish yellow, the upper mandible dusky at 

 tip; tarsi and feet dusky; iris dusky" (W. Ayres), Total length 

 7 inches, culmen 0-6, wing o'4, tail 2"4, tarsus U*9. 



Young male. At first resembles the old female, but is rather 

 more rufous bi'own. The strijies on the under surface are much 

 paler brown. The bill is generally stronger than in any female 

 bird, and the yellow colour is more or less mixed with black, the 

 dark bill being essentially a distinct characteristic of the adult male. 

 The speculum is absent at first, or only feebly indicated by a shade 

 of pale tawny buff at the base of the primaries : " bill Dutch-orange 

 colour, the tip of the upper mandible and the base of both man- 

 dibles livid liver-brown " (Sir A. Smith). 



Baft. tSouth-easteru Africa. 



a, b, c. J ad. South-east Africa. Sir A. Smith [C.]. 



sk. 



d. 2 sid. sk. Maclean Town, British Caf- MajorTrevelyan[P.]. 



i'raria. 



e. cJ ad. sk. Natal. T. Ayres [C.]. 



f. t/. (^2 'id. Piuetown, Natal, Oct., Dec. Seebohm Coll. 



( T. L. Aijres). 

 h-o. (^ ad. et Durban and Piuetown, July, Oct. Shelley Coll. 

 juv. ; ;>, 3. ? 

 ad. .sk. 

 r. (S juv. sk. Port Natal, July 24, 1839 (J. Sharpe Coll. 



Wa/ilbert/). 

 s,t. (S 2 ficl- sk. Transvaal. Forbes Coll. 



u, V. (S 2 ^d. sk. Macamac, Eastern Transvaal, F. A. Barratt, Esq. 

 July 30, 1874. [P.]. 



2. Amblyospiza unicolor. 



Pyrenestes albifrons (nee Viy.), Sharpe, P. Z. S. 1873, p. 713. 

 Pyrenestes unicolor, Fisch. H,- Seichen. Orn. Centr. 1878, p. 88 ; iid. 



J. f. O. 1878, pp. 264, 354, 1879, p. 353; Fischer, J. f. O. 1880, 



p. 195. 

 Amblvospiza unicolor, Shelley, P. Z. S. 1881, p. 589 ; id. Ibis, 1887, 



p. 45 ; id. Ibis, 1888, p. 294. 

 Coryphegnathus unicolor, Fischer, Zeitschr. yes. Or?2. i. p. 328 (1884) ; 



id. J.f. O. 1885, p. 134. 



Adult male. Similar to A. alhifrons, but smaller and blacker, the 

 head and mantle being black with only a slight wash of chocolate- 

 brown ; the throat and breast also black, not brown as in A. albi- 

 frons : " bill and feet black ; iris dark brown " (G. A. Fischer). 

 Total length 6*5 inches, culmen O'So, wing 3-6, tail 2'4, tarsus 0-9. 



Adult female. Similar to the female of A. alhifrons, but slightly 

 smaller and darker : " upper mandible horn-brown, lower mandible 

 horny yellow; feet dark brown; iris brown"' (&. A. Fischer). 

 Total length 5-7 inches, culmen 0-75, wing3'7, tail 2-2, tarsus 0-85. 



Nab. East Africa; Zanzibar district from Mombasa to Kilimanjaro. 



