THE BIRDS OF NORTHERN THAILAND 531 



(Gyldenstolpe) to May 27 at Chiang Mai (Deignan). The nest is 

 an enormous and untidy globular structure of grass, leaves, and sticks, 

 placed near the top of a tree in or at the edge of a field. During May 

 and June one sees everywhere young birds just out of the nest, follow- 

 ing the parents and pleading for food with vibrating wings and a 

 shrill kh-kh-kh-kh-kh. 



Adults have the irides creamy gray ; the orbital skin yellow ; the bill 

 brownish black ; the feet and toes pale yellow ; the claws horn brown. 



The adult in fresh plumage has the entire head white, followed by 

 a black collar, which covers the nape, sides of the neck, the lower throat, 

 and upper breast; the back brownish black (the feathers just behind 

 the collar with broad ashy tips) ; the rump white; the primary coverts 

 white, all the remaining feathers of the wing brownish black with 

 narrow white tips (these tips broader on the outer secondaries) ; the 

 rectrices brownish black, with outwardly increasingly broad white 

 tips; the remaining underparts white, mixed with deep brown along 

 the lower flanks. The upperparts soon change to a dark brown and 

 the white portions of the plumage become much soiled with mud, dust, 

 etc. Juveniles wholly lack the black collar and have the head, neck, 

 throat, breast, and belly brownish gray, the feathers with whitish edg- 

 ings to give an indistinctly streaked appearance. 



Family NECTARINIIDAE 



CHALCOPARIA SINGALENSIS ASSAMENSIS Boden Klosg 



Assamese Rubycheek 



Chalcoparia singalensis assamensis Boden Kloss, Bull. Brit. Orn. Club, vol. 50, 

 May 7, 1930, pp. 69-70. New name for "Chalcoparia singalensis lepida (Lat- 

 ham)" Stuart Baker, Fauna of British India, Birds, ed. 2, vol. 3, 1926, 

 p. 370 ("India, now restricted to Cachar"), not [Certhia] lepida Latham, 

 1790, nor Certhia lepida Sparrman, 1787, each of which =Certhia (mala- 

 censis) Scopoli, 1786. 



Chalcoparia singalensis rubinigcntis Stuart Bakes, Fauna of British India, 

 Birds, ed. 2, vol. 7, March [=May 14], 1930, p. 282. New name for "Chal- 

 coparia singalensis lepida (Latham)" Stuart Baker, Fauna of British India, 

 Birds, ed. 2, vol. 3, 1926, p. 370 ("India, now restricted to Cachar"), not 

 [Certhia] lepida Latham, 1790, nor Certhia lepida Sparrman, 1787, each of 

 which = Certhia (malacensis) Scopoli, 1786. 



Chalcoparia phaenicotis [partim], Gyldenstolpe, Kungl. Svenska Vet.-Akad. 

 Handl., 1913, p. 45 (Ban Huai Horn, Den Chai). 



Chalcoparia phaenicotis, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, 

 p. 34 (Pha Kho, Tha Chomphu). 



Chalcoparia singalensis koratensis [partim], Gyldenstolpe, Ibis, 1920, p. 464 

 ("Throughout the whole country" [partim]). 



Chalcoparia singalensis singalensis, de Schauensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1929, p. 563 (Chiang Rai). — Deignan, Journ. Siam Soc. Nat. Hist. 

 Suppl., 1931, p. 154 (Chiang Mai, Doi Suthep). 



