A COLLECTION OF BIRD-SKINS FROM SIAM. 429 
110 and 115 mm.,, practically exactly the same as Neumann’s ; 
Robinson records his four birds as over 112 mm., and all others, 
except the type of saigonensis vary between 108 and 112 mm. 
This type is apparently an abnormally small bird of only 
102 mm., and until it is proved that it is not only the type, but that 
it is really typical of a very small South-Eastern race, swigonensis 
must rank as a synonym of faiostricta. 
171. CHOTORHEA MYSTOCOPHANES. 
Bucco nystocophanes, Temm. Pl. Col, in, pl. 315 (1824). 
¢ Tung Song, P. Siam, 20.9.15. 
This is an extension of the hitherto recorded habitat of this 
little Barbet, but I can see no difference between this specimen and 
a series from the Malay Peninsula. 
On the other hand when a series from the latter locality is 
compared with a series from Borneo the females of the Malay 
Peninsula seem to have a much yellower throat and chin. In the 
Bornean birds the blue often runs up practically to the angle of 
the bill, and in nearly every case the throat is more or less suffused 
with this colour. In the Malay Peninsula birds and in those from 
South Tenasserim the chins and throats are yellowish with no 
tinge of blue at all. 
I cannot separate Oberholser’s sub-species C. m. ainpala from 
Tana Balu. All Oberholser says is that it is larger with a bigger 
red patch, but he gives no measurements for comparison. 
172. CHOTORHEA CHRYSOPOGON CRYSOPOGON. 
Bucco chrysopogon, Temm. Pl. Col. iii, pl. 315 (1824). 
235 2 Tung Song, P. Siam, 14-20.9.15. 
The lower surface in these specimens is very green, and less 
yellow than in any of the big series in the British Museum from 
any other locality, but they are also better made, fresher skins in 
perfect condition, and this may account for the difference. 
The wings measure between 131 and 134 mm. 
173. CYANOPS ASIATICA? INCOGNITA. 
ame incognita, Hume, Str. Feath. ii, pp. 442, 472, 486 
(1874). 
VOL. III, NO. 4, 1919. 
