BIRDS FROM SIAM AND THE MALAY PENINSULA 57 



Islands. So 1 think it better for the present to consider it a pale 

 specimen of bassus. S. c. malayensis apparently is not an uncommon 

 bird in suitable localities in Peninsular Siam, extending northward 

 into southwestern Siam, but how far it goes in this direction is not 

 known at present. 



Family FALCONIDAE: Falcons, Caracaras 



MICROfflERAX FRINGILLARIUS (Drapiez) 



Falco fringillarius Drapiez, Dictionnaire classique des sciences naturelles, vol. 6, 

 p. 412, pi. 5, 1824 (Indies; Swann >" suggests Malacca, but Hartert " had 

 previously suggested Sumatra). 



One female, Bangnara, Peninsular Siam, July 7, 1926. 



The following specimens collected by Dr. W. L. Abbott are in the 

 United States National Museum: Three males and one female, Trang, 

 May 24, July 20, and December 17, 1896, and January 3, 1899; one 

 male, Singapore, May 26, 1899; one male and one female, Endau 

 River, east coast of Johore, June 27, 1901; one male, Telok Besar, 

 Tenasserim, February 28, 1904. He gives the color of the soft parts 

 as: Iris dark brown; bill, cere, feet, and claws black. 



Robinson and Kloss ^^ report this as one of the commonest falcons 

 in Peninsular Siam; Gairdner ^^ reports it from as far north as Ratburi 

 and Petchaburi. It ranges from southern Tenasserim through Pen- 

 insular Siam and the Malay States to Sumatra, Java, and Borneo. 



A comparison of nine males from the Malay Peninsula, eight from 

 Sumatra, and a pair from Borneo shows no constant differences. 



Five males from the Malay Peninsula and one from Tenasserim 

 measure: Wing, 91-103 (96); tail, 50-55 (51.9); culmen, 9-10 (9.7) mm. 



Four males from Sumatra: Wing, 91.5-102 (96.2); tail, 50-53.5 

 (51.6); culmen, 9.5-10 (9.7) mm. 



One male from Java: Wing, 89; tail, 49; culmen, 9.5 mm. 



One male from Borneo: Wing, 92; tail, 51; culmen, 10 mm. 



Three females from the Malay Peninsula: Wing, 100-104.5 (102.5); 

 tail, 56.5-57 (56.3); culmen, 11 mm. 



Four females from Sumatra: Wing, 100-105 (102); tail, 51.5-60.5 

 (56.5); culmen, 10.5-11 (10.9) mm. 



One female from Borneo: Wing, 93; tail, 53; culmen, 11 mm. 



MICROHIERAX CAERULESCENS BURMANICUS Swann 



Microhierax caerulescens burmanicus Swann, A synoptical list of the Accipitres, 

 pt. 4, p. 116, 1920 (Thayetmyo, Burma). 



One female, Pak Chong, February 4, 1925; one male, Ban Sadet, 

 Sriracha, May 27, 1925; two males. Bo Ploi, Kanburi, September 26, 



i« A synopsis of the Accipitres, ed. 2, p. 181, 1922. 

 " Nov. Zool., vol. 9, p. 541, 1902. 

 " Journ. Nat. Hist. Soc. Siam, vol. 5, p. 92, 1922. 

 '» Journ. Nat. Hist. Soc. Siam, vol. 1, p. 151, 1915. 



