462 ANATID.75. 



been al)le to examine the type, which he has kindly sent to me in 

 London for inspection and comparison. 



Specimens from different localities in Northern Peru require 

 comparison. 



Hah. Andes of Peru, on the sources of the Ajnamayo {Tschudi). 



6. Merganetta Columbiana. 



Merganetta colombiana, Des Murs, Rev. Zool. 1845, p. 179 (Miis. 



Paris) ; id. Icoji. Oni. pi. vi. (184-5) ; Rchnb. Si/ii. Av., Natatores, 



t. 111. f. 1079 (1845) (ex Des Murs). 

 Merganetta Columbiana, Sdat. P. Z. S. 1855, p. 164; Sclat. S,- Salr. 



P. Z. S. 1869, p. 601 (part.). 

 Merganetta armata, part., G. R. Gr. Gm. B., App. p. 28 (1849). 

 Merganetta leucogenys, part., Bp. Compt. Rend. xlii. p. 652, n. 165 



(1856) ; Sclat. d;- Shlv. P. Z. S. 1869, p. 601 (part.) ; iid. Exot. Orn. 



p. 200, n. 3 (part.) (1869) ; G. R. Gr. Hmid-list, iii. p. 91. n. 10727 



(part.) (1871) ; Sclat. ^ Salv. Nomencl. Av. Neotrop. p. 131 (part.) 



(1873) ; iid. P. Z. S. 1876, p. 408 (part., Ecuador), 1879, p. 543 



(Frontino); Sclat. P. Z. S. 1880, p. 531 (part.); Berl. Orn. 



Monatsber. ii. p. Ill (Merida, 'S'enezuela) (1894). 

 Biziura armata, part., Schlei). Mus. P.-B., Anseres, p. 12 (1866) ; 



Gieb. Thes. Orn. i. p. 467 (part.) (1872). 

 Rhaphipterus leucogenys, jmrt., RcJmiu. Orn. Cetitralbl. 1882, p. 3 



(part., Columbia) ; Heine ^- Rchnw. Nomencl. Miis. Hein. Orn. 



p. 350 (Merida, New Granada) (1890). 



Adult male. Sides of the head and neck white ; pileum black, the 

 black continuous with a black band along the hind part of the 

 nape ; a narrow black band surrounds the base of the bill ; an- 

 teriorly to the eyes a black spot, posteriorly a black band, which 

 extends along the sides of the hind neck ; a white superciliary band, 

 continuous with a white band on the sides of the mesial nuchal black 

 band, so that on the hind neck there are three black bands — a mesial 

 one broader, and two narrow on the sides, and between these black 

 bands two white ones ; feathers of the back and scapulars black, 

 broadly edged with olive-brown on both webs ; rump and upper 

 tail-coverts undulated with narrow white-grey and black lines or 

 bars ; breast, abdomen, and under tail-coverts white, each feather 

 with a mesial blackish mark, freckled with white ; upper wing- 

 coverts lead-grey ; speculum on the secondaries glossy green, 

 bounded by two white bands, one at the tip of the greater wing- 

 coverts, the other at the tip of the secondaries ; jirimaries brown, 

 tertials of a lead-colour ; under wing-coverts lead-colour, finely 

 undulated with whitish ; tail dull gre}% the shafts of the feathers 

 white underneath : bill yellow, with the culmen black in dry skins ; 

 tarsus reddish. Total length about 15 inches, wing 6-3, tail 5, 

 culmen 1*1, tarsus 1-55. 



Female. Similar to the female of the allied species, but the 

 lower parts of a much lighter fulvous colour, and easilj' distin- 

 guished by havino; the sides of the neck uniform with the lower 

 parts, and not grey finely barred with dusky ; upper part of the 

 head, hind neck, and back grey ; hind neck finely dotted with 



