800 PRINGILLID^!. 



thighs brown ; under tail-coverts white, with brown centres ; 

 under wing-coverts and axillaries whitish, with ashy bases to the 

 feathers : quills dusky below, ashy along tli9 inner edge. Total 

 length 6-5 inches, culm3n 0-55, wing 2'65, tail 2'85, tarsus 0"9. 

 Hab. Peru and Bolivia. 



a, b. c? ad. sk. Tarnbo Valley, Peru, Oct. Henry Whitely [C.]. 



c,d. <$ ; e. § Tambo Valley, Oct. (H. Sclater Coll. 



ad. sk. Whit eh)). 



fi9- 6 $ ad. sk. Tambo Valley, Oct. (H. Salvin-Godman Coll. 

 Whitely). 



92. DIUCA. 



Type. 



Diuca, Reichenh. Av. Syst. pi. lxxviii. (1850) D. diuca. 



Hedyglossa, Cab. Mus. Hein. Th. i. p. 135 (1850) D. diuca. 



Range. Patagonia and Chili to Bolivia and Peru. 



Key to the Sjjecies. 



a. With a patch of rufous on either side of the 



vent ; outer tail-feathers with a large white 



terminal spot ; no white patch on wing. 



a'. Larger ; wing 3 - 2-3-6 inches diuca, p. 800. 



b'. Smaller ; wing 3 - l inches minor, p. 801. 



b. With no rufous on the sides of the vent ; no white 



spot on the outer tail-feathers ; a large white 



patch on the primaries speculifera, p. 802. 



1. Diuca diuca. 



Fringilla diuca, Molina, Saggio Hist. Nat. Chili, p. 249 (1782) ; Gm. 



Syst. Nat. i.p. 915 (1788')'; Vieill. N. Diet . d Hist. Nat. xii. p. 245 



(1817) ; Eud, § Gerv. Mag. de Zool. 1836, p. 18, pi. 69 ; Gay, 



Hist. Chile, Zool. p. 359 (1847). 

 Dolichonyx grisea, Less. L Inst, ii. p. 316 (1834). 

 Emberiza diuca, If Orb. t\ Lafr. Mag. de Zool. 1837, p. 77. 

 Pipilo cinereus, Peale, U.S. Expl Exped., Birds, p. 123 (1848). 

 Euspiza diuca, Gray, Gen. B. iii. A. pp. p. 30 c (1849); Cass. U.S. 



Expl. Exped., Birds, p. 135 (1858). 

 Diuca diuca, Bp. Consp. i. p. 476 (1850) ; Licht. Nomencl. Av. 



Berol. p. 43 (1854). 

 Hedyglossa diuca, Cab. Mus. Hein. Th. i. p. 135 (1850). 

 Diuca vera, Burm. J. f. O. 1860, p. 255 ; id. Reis. La-Plata St. ii. 



p. 483 (1861). 

 Diuca grisea, Scl. Cat. Amer. B. p. Ill (1862) ; id. P. Z. S. 1867, 



pp. 322, 377; id. f Salv. Nomencl. Av. Neotr. p. 31 (1873); 



Sharpe, P. Z. S. 1881, p. 7; Salvin, Cat. Strickl. Colt. p. 228 



(1882) ; id. P. Z. S. 1883, p. 421. 

 Phrygilus diuca, Philippi $ Landb. Arch. f. Naturg. 1863, p. 119; 



Gray, Hand-l. B. ii. p. 90, no. 7323 (1870). 



Adult male. General colour above slaty grey, usually with a 



