19. BIGMODUS. 325 



orange " (Aivhrsson). Total length U inches, culmeu about 09, 

 wing 5-25, tail 3-85, tarsus 0-95. 



Yoiuuj. Differs from the adult in being uniformly asby brown 

 both above and below, deepening into black on the upper tail- 

 coverts ; wings and tail as in adult, the vent and under tail-coverts 

 white, as in the old bird also, but washed with brown ; the white 

 on the quills also more extended; "soft parts similar to those of 

 the adult, but paler " {Andersson). 



Hah. South-western Africa. 



a. Ad. sk. Elephant Vlev, Daniara Land R. B. Shai-pe, Esq. 



( C. J. Andersson). 



b. cJ juv. sk. Elephant Vley, Aug. 19, 1859 R. B. Sharpe, Esq. 



(Andersson). 



c. cJad.sk. Maconjo, July 1870 (.4«c/ijrfrt). R. B. Sharpe, Esq. 



5. Sigmodus tricolor. 



Prionops tricolor, Gray, Ann. N. H. (3), xiv. p. 379 ; id. P. Z. S, 



1864, p. 4o ; Kirk, Ibis, 1864, p. 319. 

 Prionops retzii, Grai/, Hand-l. B. i. p. 366 ; Finsch 8,- Hartl. VUg. 



Ostafr. p. 366. 



Adult. Back and scapulars drab-brown, the wing-coverts uniform 

 with the back, the greater series and inner secondaries more ashy 

 brown ; primary-coverts and remainder of quiUs blackish with a slight 

 greenish gloss ; upper tail-coverts blackish ; tail greenish black, the 

 two centre feathers very slightly, all the others broadly tipped with 

 white, extending some little way up the outer web of the outer 

 feather ; head and neck all round, as well as the under surface of 

 the body, glossy black, slightly washed with grey on the lower flanks ; 

 vent and under tail-coverts white, the latter with broad black bases ; 

 under wing-coverts blackish, the primaries with a broad bar of white 

 across the inner web. Total length 8 inches, culmen 0-8, wing 5, 

 tail 3-9, tarsus 0-85. 



Hub. Zambesi district in S.E. Africa. 



fl, 6,c. Ad. sk. Tete, Zambesi. Ur. Khk [C.]. (Types of 



species. ) 



d. Ad. St. Lower Shire valley, Dr. Kirk fc.1. 



July 1861. 



6. Sigmodus graculiaus. 



Prionops graculinus, Cab. in Von dor Dcchen, lieis. iii. p. 24, Taf. iii. ; 

 Grai/, Hand-l. B. i. p. 395 ; Finsch S,- Hurtl. Vog. Ostafr. p. 368 : 

 Sharpe, P. Z. S. 1873, p. 714. 



Adult. Above ashy brown, including the scapulars and upper 

 wing-coverts ; primary-coverts and primaries black, slightly washed 

 with greenish externally, the secondaries browner, the outer web of 

 the inner secondaries ashy brown like the back ; head all round, 

 hind neck, and upper part of mantle, as well as the sides of the 

 neck and entire under surface of body purplish black, including the 



