470 SIGMODUS RETZII 
Sigmodus retzii. 
Prionops retzii, Wahlb. Oefv. K. Vet. Akad. Forh. Stock. 1856, p. 174 
Doughe river. 
Sigmodus retzii, Sharpe, Cat. B. M. iii. p. 324 (1877) ; Shelley, B. Afr. i. 
No. 671 (1896); Stark and Scl. Bds. S. Afr. ii. p. 48 (1901) ; 
Reichen. Vég. Afr. ii. p. 534 (1903); Sharpe, Handl. B. iv. 
p. 274 (1903). 
Subspecies a.—Sigmodus nigricans. 
Sigmodus retzii nigricans, Neum. Orn. Monatsb. 1899, p. 90 N. Angola ; 
Reichen. Vog. Afr. ii. p. 535 (1903). 
Sigmodus nigricans, Sharpe, Handl. B. iy. p. 274 (1903). 
Sigmodus tricolor (non Gray), Neave, Ibis, 1910, p. 225 Katanga. 
Subspecies b—Sigmodus intermedius. 
Sigmodus retzii intermedius, Neum. Orn. Monatsb. 1899, p. 90; id. 
J. f. O., 1900, p. 275 Mwanza; Reichen. Vog. Afr. ii. p. 535 (1903). 
Sigmodus intermedius, Sharpe, Handl. B. iv. p. 275 (1903). 
Subspecies c.—Sigmodus tricolor. 
Prionops tricolor, Gray, P. Z. §. 1864, p. 45 Tete. 
Sigmodus tricolor, Sharpe, Cat. B. M. iil. p. 325 (1877) ; Shelley, B. Afr. i. 
No. 672 (1896); Stark and Sclater, Bds. 8. Afr. ii. p. 50 (1901) ; 
Sharpe, Handl. B. iv. p. 275 (1903); Stoehr and Sclater, J. 8. Afr. 
Orn. Union, 1906, p. 96 N.-H. Rhodesia; Neave, Man. Mem. li. 
No. 10, p. 71 (1907) N.-H#. Rhodesia; Sheppard, J. 8. Afr. Union, 
1909, p. 29 Beira; Sclater, Ibis, 1911, p. 291 Portuguese EH. Africa. 
Sigmodus retzii tricolor, Reichen. V6g. Afr. ii. p. 535 (1903) ; Swynuner- 
ton, Ibis, 1908, p. 63 Gazaland; Sjéstedt, Kilimandjaro-Meru 
Exped. i. p. 112 (1910). 
Subspecies d.—Sigmodus graculinus. 
Prionops graculinus, Cab. J. f. O. 1868, p. 412 Mombasa ; id. in Decken 
Reis. iii. p. 24, pl. 3 (1869). ; 
Sigmodus graculinus, Sharpe, Cat. B. M. iii. p. 325 (1877) ; id. Handl. B. 
iv. p. 295 (1903) ; Bannerman, Ibis, 1910, p. 691 Kilimanjaro. 
Sigmodus retzii graculinus, Reichen. Vog. Afr. ii. p. 536 (1903) ; 
Erlanger, J. f. O. 1905, p. 691 S. Somaliland. 
Adult. Head, neck, and breast black with a greenish gloss; back, 
scapulars and wing-coverts deep blackish brown; wing quills and tail 
slightly more dusky ; tail with the central feathers showing hardly any white, 
the others with white tips, increasing in size towards the outer feathers ; 
abdomen and under tail-coverts white ; a broad white bar on the inner webs 
of the primaries, forming a conspicuous oblique band on the under side of the 
