72 NILS GYLDENSTOLPE, ZOOLOCICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 
Both the two males and the female have a large white patch on the basal part of 
the inner webs of the primaries, except the first two ones. 
The Koon Tan specimen approaches Volvocivora lugubris saturata SwWINH., as it is of 
a darker grey colouring on the upper parts of the body. 
131. Pericrocotus fraterculus. Swinu. — The Burmese Scarlet Minivet. 
Pericrocotus fraterculus: Gyldenstolpe I p. 33; Gyldenstolpe IJ; Gyldenstolpe III p. 168; Gairdner p. 149. 
Sex Loceli ig Date | Length | Wing Tail | Culmen 
mm mm. {| mm mm 
o Pak Koh | 2%: 1914] 181 93,2 87,5 14 
ot Koon Tan 5/5 1914 202 97,2 91,5 13,5 
ee Koon Tan | %/s51914| 188 93,1 88 13,3 
o |Bang Hue Pong] °/s 1914 193 94,2 90,3 12,3 
fon Koon Tan 29/4 1914 197 97,6 95,2 15 
rou Pak Koh 81/1914 184 94,5 94 13 
o' |Doi Par Sakeng| 7°/c 1914 191 98,5 94,5 13 
o |Bang Hue Pong] **/s 1914 192 95 90 12,5 
fo Pak Koh 23/3 1914 184 95 86 14 
of Koon Tan 89/5 1914 183 91,5 91 13,2 
o |Doi Par Sakeng} 17/7 1914 195 92 92,5 14,2 
& | Koon Tan | %1914| 191 90 92 12,5 
Q Koon Tan | %1914| 183 91,2. | 89,5 13,2 
Q Pak Koh 214.1914 186 88,2 86 13,3 
Q |Doi Par Sakeng| 18/7 1914 185 90,7 89,2 13,8 
Q Koon Tan 9/5 1914 190 85 90 — 
Q |Bang Hue Pong] */s 1914 180 87,5 85 13,2 
Trides: brownish black. Bill: black. Legs: black. 
A fine series of the Burmese Scarlet Minivet was collected at different parts of 
Northern Siam. : 
As already remarked by Hartert (Nov. Zool. Vol. IX, 1902 p. 556) the second 
primary has a red patch on the inner web, though the size of this patch varies a great 
deal and is smallest in the specimens collected in Northwestern Siam. These same 
specimens have longer wings than birds'from more southern districts, thus approaching 
the true P. speciosus LaTH. 
As seen by the measures given above the Siamese specimens agree well in size with 
birds from Hainan, but they differ from these birds in having the central rectrices pure 
black on the outer web while in the Hainan birds the outer web is almost red. 
One male specimen collected at. Pak Koh has, however, only the centres of the 
middle tail-feathers black and the inner web is broadly margined. 
In the parts of the Siamese Malaya visited by the Expedition this beautiful species 
was never observed. 
