62. MERGUS. 46;'. 



]);iler markings ; feathers of fhe back niid scapulars black, edged 

 with ii;rey ; rump and winj^s as in the male ; a small spot above 

 and before the eyes fulvous like the checks and the whole of the 

 uiiderparts. 



Yinmg male. Upper part of the head and hind neck grey; 

 feathers of the back black, with olive-brown edges ; lower parts 

 white : sides barred with white and dusky ; wings as in the adult 

 male, but the speculum partly lead-colour with some paler dottings, 

 only on the upper part with a green lustre. 



JIah. Andes of Columbia and Ecuador, and also Venezuela*. 



a. S «id. sk. Sta. Martha, New Granada. Salvin-Godman Coll. 



6. 2 «d. sk. FroDtino, Antioquia ( T. K. Salvin-Godman Coll. 

 Salmon). 



c. cJ ad. sk. Bogota. Gould Coll. 



d. cJ ad. sk. Ecuador {Ilir/f/itis) . Salvin-Godman Cull. 

 c.f. (S ad. sk. llio Blanco, Ecuador (C. Salvin-Godman Coll. 



Uncklei/). 

 g. Jjuv. sk. Sarayacu, Ecuador (C. Salvin-Godman Coll. 



Bncldey). 



Subfamily XT. IMERGIN^ t- 



Keij to the Genera. 



n. Culmen shorter than tarsus C2. Mf.rou.s, p. 4(5:5. 



b. Culmen longer than tarsus. 



fi'. Serrations of both mandibles short, blunt, 

 and not distinctly inclined backwards at 



tips ". G-"'. LoPHOnYTEs,p.468. 



6'. Serrations of both mandibles very conspi- 

 cuously tooth-like, and strongly inclined 

 backwards at tips .' 04. MERGAXSF.n, p. 471. 



&J. MERGUS. 



Type. 



Mergus, Lin?i. S. A', i. p. 207 (1760); Leach, 8i/st. Cat. 



M. ^- n. Brit. Mm. p. .".O (1810) ; Stei^h. Gen. 'Zool. xii. 



•2, p. loO (1S24) _ M. albellus. 



Mergellus, Kaup (cf. Xaumamiia, 1855, p. 299) ; Selbi/, 



Cat. Gen. S( Sttbfjen. B. p. 47 (1840) '. . M. albellus. 



Ranqe. Palnparctic Region. 



* I have .seen in the Rotliscln'ld collection a female specimen, apparently 

 belonging to this species, marked as from Venezuela. 



t Tbe species of this subfamily liave tlie sternum fenestrated posteriorly, 

 like the species of the genus Vlangtda, to wliii-h tliey sliow n great resemblance 

 also in coloration. 



