306 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



The range of the present subspecies seems to coincide closely with 

 that of Kitta e. magnirostris in the districts east of the Khun Tan 

 chain. It is noteworthy that neither has yet been found in Chiang 

 Kai and that both have been recorded only from the more southern 

 portions of Lampang, Phrae, and Nan Provinces. 



This form differs not at all in habits and habitat from the more 

 western birds. 



Two examples taken on August 18 at Ban Mae Mo are in postjuvenal 

 molt. 



In series, f resh-plumaged adults of sakeratensis are separable from 

 those of kinnewi in having the head, neck, breast, and upper back 

 rather more slaty ; the mantle and underparts slightly deeper in color. 



CRYPSIRINA FORMOSAE ASSIMILIS (Hume) 



Tenasserimese Gray Tree Pie 



Dendrocitta assimilis Hume, Stray Feathers, vol. 5, 1877, p. 117 ("Hill Tenas- 

 serim" ; specimens recorded from "Kollidoo" and Muleyit, by Hume, ibid., 

 vol. 6, 1878, p. 386). 



Dendrocitta himalayensis, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, p. 164 

 (Khun Tan). 



Dendrocitta sinensis assimilis, Gyldenstolpe, Ibis, 1920, p. 449 (Khun Tan). 



Dendrocitta formosae assimilis, de Sohauensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1929, p. 528 (Doi Suthep) ; 1934, p. 179 (Doi Suthep, Doi Chiang 

 Dao). — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1981, p. 134 (Doi 

 Suthep). — Chasen and Boden Kloss, Journ. Siam. Soc. Nat. Hist. Suppl., 

 1932, p. 247 (Doi Suthep).— Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, 

 p. 103 (Doi Suthep). 



Dendrocitta himalayensis assimilis, Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 307 

 (Doi Ang Ka, Doi Langka, Khun Tan). 



The southern race of the gray tree pie is known in our provinces 

 only from the higher peaks of the Thanon Thong Chai and Khun Tan 

 ranges, where it inhabits the evergreen from 3,200 feet (Doi Suthep) 

 to 8,000 feet (Doi Ang Ka). 



I found this bird common in flocks, usually, but not always, in 

 the tops of tall trees, attracting attention to itself by its noisy calls, 

 some of which have been compared by de Schauensee (1929) to the 

 quack of a mallard, the cheep of a chick, and the "rusty hinge" of an 

 American grackle. One of my specimens had the stomach filled with 

 insects, but I have watched others feeding upon berries. 



An example from Doi Ang Ka, April 10, had the gonads enlarged. 

 A bird of August 28 is in postjuvenal molt and another, of November 

 18, has almost finished the postnuptial molt. 



The breeding male mentioned above had the irides red-brown; the 

 bill black ; the feet, toes, and claws blackish brown. 



Adults have the forehead and a narrow line above the eye black; 

 the crown and nape ashy gray; the scapulars and back light buffy 



