(478) Cinclus cinclus leucogaster.
The White-bellied Dipper.
Cinclus leucogaster "Bonaparte, Consp. Av., i, p. 252 (1850) (West Siberia).
Vernacular names. None recorded.
Description. Similar to the Kashmir Dipper but the lower parts are all white, with the exception of the extreme posterior flanks and vent which are brown and the under tail-coverts which are slaty-grey; even these parts, however, are also much marked and fringed with white; the head, neck and upper back are generally decidedly paler than in cashmeriensis.
Colours of soft parts and Measurements are the same as those of the last bird.
Distribution. West Siberia, Turkestan, Altai, the region of Lake Baikal and straggler South to Gilgit, from which last-named place there is a typical specimen in the British Museum.
Nidification. I can find nothing recorded.
Habits. Those of the genus.
Both this race and the last differ from typical Cinclus cinclus in being much darker, less reddish above and by the brown extending further down the back into the slate-colour. C. c. cashmeriensis also differs in being less red on the abdomen next to the white breast.
Cinclus pallasii Temm., Man. d'Orn., i, p. 177 (1815). Type-locality: Crimea.
Key to Subspecies.
A. Chocolate of head etc. not very dark ; cul-
men from front 18 to 19 mm C. p. tenuirostris, p. 4.
B. Chocolate very dark; culmen 20 to 22.5 mm. C. p. mania, p. 5.