382 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



IXOS CANESCENS Riley 



Ixos canescens Riley, Proc. Biol. Soc. Washington, vol. 46, p. 155, 1933 (Kao 

 Kuap, Krat, southeastern Siam). 



One male and one female, Kao Kuap, Krat, December 24 and 26, 

 1929. 



The form was described as similar to Ixos griseiventer (Robinson 

 and Kloss) of southern Annam, but the pileum a lighter brown with 

 the shaft streaks reduced and less conspicuous; the back much darker 

 citrine; the tail above dusky toward the tip not citrine for its whole 

 length; tail below dusky instead of citrine; under tail coverts darker; 

 the chest a more brownish gray and the shaft streaks much reduced 

 in width and cartridge buff instead of grayish white. Wing, 94; 

 tail, 91.5; culmen, 20.5; tarsus, 18; middle toe with claw, 16.5 mm. 

 This is a description of the male. 



The female measures: Wing, 92; tail, 86; culmen, 20; tarsus, 18; 

 middle toe with claw, 16.5 mm. 



Ixos griseiventer and Ixos canescens do not belong to the same form 

 group as tickelli but are distinct species. 



Dr. Smith took only two specimens of canescens. Its range is 

 probably confined to southeastern Siam and northwestern Cambodia. 



IXOS MALACCENSIS MALACCENSIS (Blyth) 



Hypsipetes malaccensis Blyth, Journ. Asiat. Soc. Bengal, vol. 14, p. 574, 1845 

 (Malacca). 



One not sexed, Kao Soi Dao, Trang, January 16, 1934. 



Dr. W. L. Abbott collected the following specimens in the Malay 

 Peninsula: Six males and two females, Trang (Prahmon, April 9, 

 1896; Lay Song Hong, September 8 and November 15, 1896; near 

 Chong, January 24, 1897; Kao Soi Dao, 2,000 feet, February 12, 

 1899, and just "Trang", February 3, 1897, January 5 and 24, 1899); 

 one male, the Dindings, Straits of Malacca, April 13, 1900; one male, 

 Rumpin River, Pahang, June 7, 1902. He describes the soft parts 

 as: Iris pale brown; bill brownish black, pale near base of lower 

 mandible; feet fleshy brown, claws horn brown. 



The form ranges from the Straits Settlements north through Penin- 

 sular Siam to southern Tenasserim. 



Robinson and Kloss '^ record it from Peninsular Siam as far north 

 as Tasan, Chumporn; Robinson ^^ records it from Pulo Telibun, 

 Trang; and Kao Nawng, Bandon "; Robinson and Kloss '* from Kao 

 Nok Ram, 1,200 feet, Nakon Sritamarat; Baker ''^ from Tung Song. 



" Journ. Nat. Hist. Soc. Slam, vol. 5, p. 265, 1924. 

 '« Jonrn. Federated Malay States Miis., vol. 7, p. 173, 1917. 

 " Journ. Federated Malay States Mus., vol. 5, p. 102, 1915. 

 N Journ. Federated Malay States Mus., vol. 11, p. 61, 1923. 

 M Journ. Nat. Hist. Soc. Siam, vol. 3, p. 196. 1919. 



