54 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 
Some of the specimens in my collections, especially those from Pak Koh and Bang 
Hue Pong, have the flanks and sides of the body of a richer rufous colour than other 
specimens from southern localities thus inclining to G. l. belangert Less. They are, however, 
clearly referable to the Siamese race and not to the Burmese and Tenasserim race of which 
there is a fine series in the R. Nat. Hist. Museum of Stockholm. When making an 
excursion at Chum Poo on the 2nd of May I found a nest containing 4 pure white eggs. 
The nest was placed in a low tree and rather difficult to detect among the leaves though 
it was fairly large. The whole structure of the nest somewhat resembled that of our 
common Song Thrush. 
92. Garrulax pectoralis. Govutp. — The Black-gorgeted Laughing-Thrush. 
Garrulax pectoralis: Gyldenstolpe II; Gyldenstolpe III p. 164. 
Q Koon Tan *8/5 1914. L = 320 mm. W = 146,5 mm.; T = 144 mm.; C = 31 mm. — ¢ Doi Par 
Sakeng 16; 1914. L = 283 mm.; W = 140 mm.; T = 140 mm.; C = 380 mm. — ¢ Koon Tan *8/, 1914. 
L = 296 mm.; W = 143,56 mm.; T = 140 mm.; C = 30 mm. — Irides: reddish brown. Bill: horn colour. 
Legs: plumbeous. 
The Black-gorgeted Laughing-Thrush was not quite as common as Garrulax moni- 
liger Hopes. with which species it was associated. 
The colour of the ear-coverts seems to be variable and in some of my specimens 
they are almost black while in other they are pure white. Like birds from Tenasserim 
the Siamese specimens have buff-coloured tips to the tail-feathers thus resembling the 
subspecific race inhabiting Hainan which has been named G.. p. semitorquata by OGILVIE 
Grant. This subspecies is also said to be characterized by having the outer webs of the 
outer primaries brownish buff instead of hoary grey. 
Siamese specimens seems, however, to be intermediate between the typical and 
the Hainan race in having the tail-feathers tipped with buff as in G. p. semitorquata but 
the outer webs of the outer primaries are hoary grey as in G. pectoralis. 
The Hainan race seems, however, to me a little doubtful but if the birds really are 
so much smaller as stated by Grant this form most be given a subspecific rank otherwise 
it only looks as being an individual variation. 
93. Garrulax moniliger. Hopes. — The Necklaced Laughing-Thrush. 
Garrulax moniliger: Gyldenstolpe I p. 20; Gyldenstolpe III p. 164. 
Sax Racalieg Date Length | Wing Tail Culmen | Tarsus 
mm. mm. mm. mm. mm. 
fof Koon Tan 19/9 1914 272 127 129 24 38 
g Pak Koh 5/4 1914 270 125 137 23 37 
x Pak Koh 20/3 1914 282 128 146 26 38 
od Pak Koh ls 1914 265 126 134 25 39 
Trides: yellow to yellowish red. Bill: horn colour. Legs: plumbeous grey. 
