190 



surface white; under wing-covcrts grey; underside of the quills 

 sooty black, except the mirrors and shafts which are white, in strong 

 contrast : bill lake-red ; tarsi and toes rather darker red. Total 

 length 19 inches, culmen 1-9, wing 14-25, tail 6, tarsus 2-1, middle 

 toe with claw 1"9. 



The female appears to be slightly smaller than the male. 



Adult in winter. Like the above, except that the head is white, 

 with greyish streaks and mottlings which are darkest about the 

 orbits and auriculars. 



Immature. Like the above, with a larger proportion of black in 

 the primaries, and duller colours in the bill, tarsi, and toes. 



Yoimrf (Aug. 2nd). Similar, but the occiput more streaked and 

 the upper neck mottled with dull brown ; brown markings along 

 the wing-coverts and on the long inner secondaries, the other 

 secondaries chiefly ash-brown except on the inner margins ; pri- 

 maries with more black, but the same plan of pattern ; tail white, 

 with an imperfect subterminal blackish bar (probably complete in 

 younger birds) : bill, tarsi, and toes brown. 



Hah. The Andean lakes (breeding), and the coasts of Ecuador, 

 Peru, and Chile. Not on the Eastern or Argentine side of the Andes. 



a. Ad. sk. 



b. Ad. St. 



c. 2 ^d. sk. 



d. cj ad. sk. 



e,f. d 2 fitl. sk. 



ff, h. 2 ad. sk. 



i, k. Ad. sk. 



I, m, n. cJ 5 ^■ 



et inira. st. 

 o. Ad. sk. 



]}. Ad. sk. 



q. S ad. sk. 



r. Imm. sk. 



s. Imm. sk. 



t. c? <id. sk. 



u, i: Ad. et imm. 

 sk. 



7D. Ad, sk. 



Cliile, winter {Cimiin//). 

 Chile, summer (Cuminy). 

 Chilean Andes, 7000 ft. {E. C. 



Reed). 

 Sacaya, Chile, Jan. 



Iluasco, Chile, Feb. 



Prov. Tarapaca, N.Chile, Jan., 



Feb. 

 Lake Titicaca, Andes {Messrs. 



Veitcli). 

 Tinta, Peruvian Andes {H. 



Whiteley). 

 Tinta, Peruvian Andes, Julv 



{H. W.). 

 Tinta, Peruvian Andes, May 



{H. W.\ 

 Laguna de Lanjui, Peruvian 



Andes, Feb. {H. W.). 

 Tambo, near Islay, Peru, Oct. 



{H. W.). 

 Islay, coast of Peru, Oct. 



(Commr. J. R. H. MucFcir- 



lane) . 

 Callao Bay, coast of Peru, 



Aug. {Admiral A.H. Mark- 



ham). 

 Callao Bay, coast of Peru, 



Aug., Sept. {Commr. Mac- 



Furlane). 

 Colta, Ecuadoi-, Dec. (C. 



Buclxley). 



Purchased. 

 Purchased. 

 Salviu-Godman Coll. 



II. Berkelev James, 



Esq. [P.]. 

 H. B. James, Esq. 



[P.]. 

 H. B. James, Esq. 



Salvin-Godman Coll. 



Purchased. 



Salvin-Godman Cull. 



H. Saunders Coll. 



Salvin-Godman Coll 

 Salvin-Godman Coll. 



H. Saunders Coll. 



H. Saunders Coll. 

 H. Saunders Coll. 

 Salvin-Godman Coll. 



