346 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



Borneo and one male from Sumatra: wing, 65-74 (69.9); tail, 47-54 

 (50.8); culmen, 17-18 (17.6) mm. 



The form ranges from the Malay States north to Trang and Nakon 

 Sritamarat. Williamson" records it from Bangnara, Patani; Robin- 

 son and Kloss " say it is rare in Trang; de Schauensee^^ collected a 

 pair in Nakon Siritamarat. 



STACHYRIS POLIOCEPHALA DILUTA Robinson and Kloss 



Stachyris poliocephala diluta Robinson and Kloss, Ibis, 1918, p. 587 (Taiping, 

 Peark). 



Dr. W. L. Abbott took a female at Lay Song Hong, Trang, August 

 31, 1896, and another female with a nest and three eggs in Trang, 

 March 8, 1897. He gives the soft parts as: Iris straw yellow; upper 

 mandible dull black, lower mandible leaden; feet greenish leaden. 



The form occurs from the southern end of the Malay Peninsula 

 north to Trang and Nakon Sritamarat. Robinson and Kloss ^^ report 

 it rare in Trang. De Schauensee ^^ secured a male in Nakon Srita- 

 marat. 



Three specimens from Borneo are somewhat darker than three 

 from the Malay Peninsula. No specimens from Sumatra have been 

 examined. 



STACHYRIS MACULATA PECTORALIS (BIyth) 



Timalia pedoralis Blyth, Journ. Asiat. See. Bengal, vol. 11, p. 793, 1842 

 (Malacca). 



Dr. W. L. Abbott took the following in the Malay Peninsula: Three 

 females, Lay Song Hong, Trang, December 30, 1896; four males, 

 Endau River, eastern coast of Joliore, June 22-28, 1901; two males, 

 Rumpin River, Pahang, May 27 and June 29, 1902. He gives the 

 soft parts as: Iris brownish yellow or straw yellow; orbital sldn and 

 naked skin on neck blue; upper mandible black, lower mandible 

 leaden at the base; feet leaden. 



Beside the differences pointed out by Robinson and Kloss, ^^ the 

 present series seems to be on an average less heavily spotted below 

 than either Sumatran or Bornean specimens. 



There seems to be little or no difference in size. Three males and 

 two females from Sumatra and one male and two females from Borneo 

 measure: Wing, 76-85 (81.2); tail, 64-70.5 (66.7); culmen, 19-20.5 

 (19.9) mm. Six males and four females from the Malay Peninsula: 

 Wing, 78-85 (80.9); tail, 62-69 (65.9); culmen, 18.5-20.5 (19.7) mm. 



" Journ. Nat. Hist. Soc. Siam, vol. 3, p. 17, 1918. 



« Ibis. 1911, p. 62. 



«» Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 192, 1934. 



•« Ibis, 1911, p. 62. 



" Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 192, 1934. 



" Ibis, 1918, p. 587. 



