92. DIUCA. 801 



slight wash of brown (remains of the seasonal plumage) on the 

 mantle and back ; the lower back, rump, and upper tail-coverts 

 clearer slaty grey ; wing-coverts slaty grey like the back ; bastard- 

 wing, primary-coverts, quills, and tail-feathers black, externally 

 edged with slaty grey, whiter on the margin of the primaries and 

 browner on the inner secondaries ; four outer tail-feathers with a 

 large white spot at the end of the inner web, increasing in extent 

 towards the outermost ; crown of head like the back : lores, 

 feathers below the eye, and ear-coverts blackish, washed with slaty 

 grey ; upper and lower edge of eyelid white ; cheeks and throat pure 

 white ; sides of neck slaty grey ; fore neck and chest, sides of body 

 and flanks clear slaty grey,: breast and abdomen pure white : a 

 distinct patch of chestnut on the sides of the vent ; thighs paler 

 chestnut, ashy grey behind ; under tail-coverts white, margined 

 with chestnut ; under wing-coverts and axillaries slaty grey, the 

 lower series white at the ends ; quills below dusky, ashy white 

 along the inner edge. Total length 7 inches, culmen Ol3, wing 

 3*6, tail 2-6, tarsus 0-8. 



Adult female. Differs from the male in being browner where the 

 latter is grey ; ear-coverts brown ; cheeks, throat, breast, and 

 abdomen white ; fore neck, chest, and sides of body pale ashy 

 brown, inclining to reddish brown on the flanks, and to orange on 

 the sides of the vent. Total length 6-S inches, culmen 0*6, wing 

 3-2, tail 2-7, tarsus 0-85. 



Trorn the number of specimens which have brown edges to the 

 grey feathers, it is evident that this species has a seasonal plumage, 



Hob. Chili. 



a, b. <J 2 ad. sk. Chili. Sclater Coll. 



c, d. S 2 ad. sk. Chili. Salvin-Godman Coll. 



e. $ ad. st. Chiloe (C. Darwin). Zool. Society. 



/. S ad. st. Chiloe. Sir W. Burnett and 



Admiral Fitzroy [P.], 



g. d ad. st. Valparaiso. Lord Byron [P.*]. 



h. Ad. sk. Talcahuano, Chili (A. H. Salvin-Godruan Coll. 



Markham). 



*i &■ 6 2 a( i- sk- Coquimbo, Chili, Nov. 1881 Salvin-Godman Coll. 



{A. II. Markham). 



I. 2 ad. sk. Coquimbo (Dr. Cqppinger). Toy. H.M.S, ' Alert,' 



2. Diuca minor. 



Diuca minor, Bp. Comp. i. p. 476 (18o0) ; Sd. 8f Salv. Nomend. Av. 



Neotr. p. 31 (1873) ; Durnf. Ibis, 1878, p. 393. 

 Phrygilus minor, Gray, Haiid-l. B. ii. p. 90, no. 732-5 (1870). 



Adult male. Similar to D. grisea, but smaller. Total length 62 

 inches, culmen - 5, wing 3*4, tail 2-9, tarsus 0-8. 



Adult female. Similar to the male, but browner and not so ashy. 

 Total length 6 inches, culmen 0-5, wing 3*1, tail 2-4, tarsus 0*8. 



Young male. Similar to the old male, but with the plumage more 

 fluffy and the colours rather purer. 



Hah. Patagonia. 



VOL, XII, 3 J' 



