416 MR. E. C. STUART BAKER ON 
3¢ Muak Lek, E. Siam, 23-25.8.15. 
4¢ 2% Klong Wang Hip, P. Siam, 30.9 to 8.10.15. 
* Krabin, C. Siam, 6.11.15. 
¢ Bangkok, 17.12.15. 
2 ¢ 2 Maprit, 29.12.15 and 3.1.16. 
[ find it impossible to divide this species into geographical 
races, though at first I was disposed to separate the Chinese birds 
on account of the comparative greyness of the cheeks and the sides 
of the neck, a feature which seems to be very fairly consistent. 
The Siamese birds also, at first sight, seem to be a purer white 
helow than those from Burma and Bengal, but this is probably due 
to the great care with which all Robinson’s and Kloss’ collectors 
(one was employed by Mr. Herbert) make up their skins. For the 
present I leave all these Crimson-backed Flower-Peckers under the 
One Dame, 
136. Dic.weuM CHRYSORRH@UM, 
Dicaeum chrysorrhoeum, Yemm, Pl. Col pl. 478, lig. i. (1829). 
45 2 Muak Lek, E. Siam, 23-25.8.15. 
2¢ Krabin, C. Siam, 6-7.11.15. 
Birds from Sikkim to the Malay Peninsula do not seem to 
vary at all, either in colouration or size, but there are two specimens 
in the British Museum from Mt. Dulit and Kina Balu in Borneo, 
which probably deserve to be separated on account of their much 
darker plumage, and the unusually heavy dark stripes on the lower 
plumage. 
137. PIPRISOMA SQALIDUM MODESTUM. 
Prionochilus modestus, Hume, Str. Feath. iii, p. 298 (1875). 
25 22 Pak Jong, E. Siam, 19-21.8.15. 
4 3 2 Krabin, C. Siam, 30.10 to 7.11.15. 
This form of Piprisoma ranges to the north as far as 
Cachar and the Assam Hills south of the Brahmapootra, In the 
hills north of this river typical sqalidum alone is found. 
138. PRIONOCHILUS IGNICAPILLUS, 
Dicaeum ignicapilla, Eyton, P.Z.S. p. 105 (1839). 
? juv. Tung Song, P. Siam, 11.9.15. 
JOURN, NAT. HIST, SOC, SLAM. 
