Scaly-sided Merganser

Here the details of the Scaly-sided Merganser named bird below:

SCI Name:  Mergus squamatus
Protonym:  Mergus squamatus Proc.Zool.Soc.London Pt2 p.184
Taxonomy:  Anseriformes / Anatidae / Mergus
Taxonomy Code:  scsmer1
Type Locality:  China.
Author:  Gould
Publish Year:  1864
IUCN Status:  Endangered

DEFINITIONS

MERGUS
(Anatidae; Ϯ Red-breasted Merganser M. serrator) L. mergus  type of waterbird, not further identified, mentioned by Pliny, Terentius Varro and the poet Horatius Flaccus  < mergere  to plunge in; "62. MERGUS.  Rostrum denticulatum, subulato-cylindricum apice adunco." (Linnaeus 1758); "Mergus Linnaeus, 1758, Syst. Nat., ed. 10, p. 129. Type, by subsequent designation (Eyton, 1838, Monogr. Anatidae, p. 76), Mergus castor Linnaeus = Mergus serrator Linnaeus." (Johnsgard in Peters 1979, I, ed. 2, 496). Linnaeus's Mergus comprised five species (M. cucullatus, M. Merganser, M. Serrator, M. Albellus, M. minutus).
Var. Mergis.
Synon. Merganser, Prister, Promergus, Serrator.
● (syn. Gavia Ϯ Great Northern Diver G. immer) "Genre de Plongeon.   Genus Mergi.  ...  LE GRAND PLONGEON . . .MERGUS MAJOR" (Brisson 1760); based on "Colymbis" of Gessner 1555, "Colymbus maximus" of Jonston 1650-1653 and other authors, and "Imber" of the Norwegians and Faeroese; "MERGVS. Taucher.  ...  Mergus stellatus. Le petit Plongeon. Gestirnte Halbente.  ...  Mergus septentrionalis. La Plongeon à gorge rouge. Lumme.  ...  Mergus glacialis. Le grand Plongeon tacheté. Hymber." (Schaeffer 1789). 
● (syn. Uria Ϯ Common Guillemot U. aalge) "XIII. Mergus  **Lomvia.   Guillemot.   le Guillemot" (Tunstall 1771 (ed. Newton 1880)).

squamatum / squamatus
L. squamatus  scaled  < squama  scale.