106 BULLETIN 17 2, UNITED STATES NATIONAL MUSEU:*! 



Straits Settlements. The specimens from Patani are slightly smaller 

 than those from farther north in the Peninsula. No specimens have 

 been examined south of Patani, The measurements and relation- 

 ships will be discussed under the next form. 



The male taken on January 19 by Dr. Abbott is an immature bird. 

 The maroon of the back is coming in irregularly and is about half 

 completed; the under tail coverts are being renewed. It still retains 

 the old tail of the immature plumage, the feathers of which are old and 

 worn, and much narrower than they are in the adult; the two outer 

 primaries of the immature plumage are still in place, and the third, 

 though new, is still in growth. 



TBERON CURVIROSTRA NIPALENSIS (Hodgson) 



Toria nipalensis Hodgson, Asiat. Res., vol. 19, p. 164, pi. 9, 1836 (Nepal). 



One male, Huey Me Sae, December 24, 1932; one female. Ban 

 Kiriwong, July 10, 1928; one male and one female. Pang Sok, eastern 

 Siam, August 19, 1926; one male, Pak Chong, eastern Siam, May 10, 

 1925; one female, Hupbon, near Sriracha, May 25, 1925; one male and 

 one female, Nong Klior, near Sriracha, March 21 and 26, 1926; two 

 males and one female, Kao Seming, Krat, October 10-14, 1928; two 

 males and two females, Koh Chang, January 8-9, 1926; one male. 

 Ban Tarn Dam, southeastern Siam, March 5, 1930. 



Dr. W. L. Abbott collected two males and one female, Domel 

 Island, Mergui Archipelago, January 27 and 29, 1904; two males and 

 one female, Tenasserim (Pakchan, December 19, 1900; Bok Pyin, 

 February 16, 1900; and Boyces Pomt, February 9, 1904). He 

 describes the soft parts as: Iris orange; naked orbital skm green; 

 bill greenish yellow, base dark red; feet purplish red, claws pale 

 horn brown. 



Of the considerable series of Treron curvirostra in the United States 

 National Museum, only the forms that have a bearing on the Siamese 

 forms will be here considered. A series of males from Sumatra ap- 

 pears to be paler, especially below, with more white on the belly than 

 in a series of the same sex from the Malay Penmsula, from Patani, 

 north to Bandon. Males from Tenasserim and western, northern, and 

 southeastern Siam are much darker below than Malay Peninsula 

 birds. In the Malay Peninsula series there are one or two males that 

 are dark like the northern birds, but there are no light-colored speci- 

 mens among the large series from western, northern, and southeastern 

 Siam. I have seen no Nepalese specimens nor any from India, but I 

 assign the northern Siamese birds to Treron curvirostra niimlensis, as 

 it does not appear to belong to forms occin'ring farther south. There 

 seems to be a gradual darkening of the plumage below and an increase 

 in size from the south to the north. Above, the differences are not 

 so pronounced. The above dissimilarities also hold in the females, 



