390 MESSRS. ROBINSON AND KLOSS ON 



3 c? , $ . Koh Lak, 3-5 April 1919 [Nos. 4993-4, 5053, 5061]. 



Male. " Iris dark ; bill and feet black." Female. " Iris dark ; 

 bill black, base of lower mandible grey; feet black or greyish black." 



Total length S , 88, 92, 90, 96, 92 ; $ , 82, 86, 88 ; wing 6 , 

 47, 48, 46, 48, 49 ; $ , 46, 47, 45 ; tail 6 , 32, 30, 28, 27, 28 ; $ , 28, 

 29, 28; tarsus cS , 12, 12, 11, 11, 13; 9, 12, 12, 11.5; bill from gape 

 6 , 11, 12, 10, 12, 12.5 ; $ , 12, 11, 9.5 mm. 



The acquisition of this series, all in good condition, has caused 

 us again to review the available series of this species in our collec- 

 tion. It is evident, as Kloss states, that the Siamese male birds, as 

 far south as Takuapa, differ from the Malayan form in being much 

 whiter beneath, with only a slight tinge of buffy.* None of the 

 specimens in the above series, or in the type series, have any tint of 

 purplish in the greater or lesser wing-coverts, all being steely green- 

 ish, while the majority of ?outh Malayan specimens have the purplish 

 tint pronounced, especially on the outer wing-coverts. 



We can distinguish no constant differences in the females. 

 Kloss' type from Lat Bua Khao, and another from Koh Lak in his 

 collection, are more washed with ferruginous above than most south- 

 ern specimens, but another from Koh Lak is as grey as any from the 

 south. 



There is no tangible difference in size, but northern birds are 

 perhaps very slightly larger. To sum up, it is evident that the 

 Siamese bird is subspecifically distinct from the southern D. c. ignita, 

 though whether it is correctly separated from the Chinese and 

 Hainanese form, D. c. coccinea (Scop.), is rather more open to question. 



562. Dicaeum chrysorrhoeum chrysorrhoeum Temm. 



Dicaeum chrysorrhoeunn, Temminck, PI. Ool. 478, 1829 (Java) ; 

 A., p. 195 (Shymotee to Malewoon) ; B., p. 22 (Junk Seylon) ; 



*The two southernmost specimens in our collection, from the Endau 

 River, South Pahang, and from Pulo Mapor, Rhio Archipelago, are fully 

 as -white beneath as any birds fi'om Koh Lak. Both are adult males with 

 wings (measured dry) 46, 49.5 mm. Tioman Island birds are buffy beneath. 



A. Hume & Davison, Stray Feathers, vi, 1878. E- O. Grant, Fasciculi Malayenses, iii (Birds), 1905. 



B. Miiller, Die Ornis dor Insel Salanga, 1882. F. Eobinson and Kloss, Ibis, 1910-11. 



C. Gates, Birds Brit. Burmah, Vols, i & ii, 1883. G. Gairdner, Journ. N. H. Soc. Siam, i, 1915. 



D. Bonhote, P. Z. S. 1901, Vol, i. H. Robinson, Journ. F. M. S. Museums, v, 1915. 



JOURN. NAT. HIST. SOC. SIAM. 



