THE BIRDS OF NORTHERN THAILAND 405 



Myiophoneus stonei de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1929, 

 pp. 469-470 (Chiang Mai [=foot of Doi Suthep], North Thailand). 



Myiophoneus eugenii eugenii, de Schauensee, Proc. Acad. Nat. Sci. Philadel- 

 phia, 1929, p. 544 (Chiang. Mai [=foot of Doi Suthep]). 



Myiophoneus stonei, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1929, 

 p. 544 (Chiang Mai [=foot of Doi Suthep]). 



Myophonus coeruleus eugenei, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, 

 p. 143 (Doi Suthep). 



Myophonus stonei, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 143 

 (Doi Suthep). 



Myophonus temminckii eugenei, de Schauensee, Proc. Acad. Nat. Sci. Philadel- 

 phia, 1934, p. 212 (Doi Suthep, Doi Chiang Dao). — Deignan, Journ. Siam 

 Soc. Nat. Hist. Suppl., 1936, p. 113 (Doi Suthep). 



Myophonus eugenei eugenei, Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 418 (Doi 

 Langka, Doi Suthep, Mae Khan, Song Khwae valley ) . 



This is the common whistling thrush of our area, occurring at suit- 

 able localities throughout the northern provinces, with the curious 

 exception of Chiang Rai, whence it has never been recorded. Eisen- 

 hofer sent to Stockholm four unsexed skins, collected at Khun Tan in 

 1914, and to Hannover, a male from Pha Hing, May 11, 1912; Boden 

 Kloss mentions (Ibis, 1918, p. 208) a bird from Phrae in the William- 

 son collection; I have specimens from Ban Na Noi (Chiang Mai 

 Province) and Ban Huai Ki. 



This species ranges along mountain torrents from the level at which 

 they debouch onto the plains up to their sources, on Doi Chiang Dao 

 reaching 4,500 feet, on Doi Suthep, 5,500 feet, and on Doi Ang Ka, 

 5,500 feet or higher, but it is found in greater numbers at the lower 

 elevations where the streams are broader and more turbulent. On 

 Doi Suthep it dwells in pairs at every waterfall and along every reach, 

 hopping about on mossy logs and spray-drenched rocks and from time 

 to time uttering loud calls or a wild, whistled song which carries above 

 the roar of rushing water and re-echoes from the walls of the ravines. 

 It is a timid bird, as befits a species whose first intimation of ap- 

 proaching danger must frequently be wholly visual, and, at the least 

 alarm, flies strongly into the forest to circle back to the water's edge 

 beyond the nearest bend. 



Adults have the irides brown ; the bill deep yellow, with the culmen 

 and basal half of the maxilla dark horny brown or blackish ; the feet 

 and toes dark brown or blackish brown; the soles yellow 5 the claws 

 black or blackish brown. 



The present form, which is scarcely distinguishable in life from the 

 much rarer temminckii, differs in having the general color of the 

 plumage more blue, less violet or purplish (seen only by direct com- 

 parison of specimens) ; in always lacking the white or violet-white 

 tips to the median upper wing coverts; in having the bases of the 

 feathers of the lower back, flanks, and lower abdomen dark sooty 

 gray, without the least trace of concealed white. 



