KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 56. N:0 2. 67 
During my seven months trip to the North of Siam I never observed a single 
specimen, but during my previous journey 1911—1912 I oncemet with a small flock 
near the town of Muang Preé. 
This beautiful Bulbul has rather a pretty song which is frequently uttered. 
It is never found in dense jungles but affects cultivated land and orchards. 
118. Iole viridescens. Bruytu. —- The Olive Bulbul. 
Q Koh Lak Paa %/i2 1914. L = 175 mm; W = 78 mm; T = 77 mm; C = 17 mm.; Tarsus = 17 
mm. — Irides: white. Bill: horn colour. Legs: brown. 
The Olive Bulbul was only obtained in the Siamese Malaya. Here it occurred in 
the dense forests among the hills dividing Siam and Tenasserim. Near the coast I 
never observed it not nor was it very common on the Tenasserim boundary at least not at 
the localities visited by the Expedition. 
119. Criniger gutturalis sordidus. Ricum. 
Criniger echraceus: Robinson III p. 746. 
do Pak Koh 75/3 1914. L = 215 mm; W= 111 mm; T = 116 mm.; C = 19 mm. — ¢ Doi Par 
Sakeng 1/7 1914. L = 231 mm.; W -= 109 mm; T=115 mm; C = 19 mm. — ¢ Pak Koh ™/s 1914. 
L=218 mm; W=111 mm; T=116 mm; C=18 mm. — ¢ Koon Tan *%/5 1914. L = 213 mm; 
W = 103 mm.; T = 106 mm.; C = 17 mm. — Irides: ad.: brownish grey. imm.: brown. Bill: ad.: plumbeous. 
imm.: yellowish brown. Legs: pale brown. 
This species was originally described from Trang in Lower Siam (RICHMOND. Proc. 
U. 8. Nat. Mus. Vol. 22. 1900 p. 320) and given a specific rank. 
As far as I can see, it is only a subspecies of Criniger gutturalis which it resembles 
very much, being merely separated by its larger size and its paler and more olive colouring 
on the upper parts of the body; the under parts of the body are darker and less yellow, 
these parts being almost buffy olive. 
This Bulbul occurred in Northern Siam, where I found it at the same localities 
as Criniger gutturalis henrici, Oust.; though it was by no means as common as that 
species. 
The immature bird resembles the adult one in the general tone of the plumage, 
but it has the wing-coverts and the secondaries rufous buff and that colour almost occupies 
the whole of the outer secondaries; the colour of the irides and that one of the bill is also 
different as stated above. 
120. Criniger gutturalis henrici. Ovsrt. 
Criniger henrici: Gyldenstolpe I p. 24. 
Criniger guituralis; Gyldenstolpe III p. 166. 
& Koon Tan *4/) 1914. L = 230 mm.; W= 110 mm.; T = 118 mm; C = 18 mm. — 9 Koon Tan 
8/9 1914. L = 230 mm.; W = 108 mm.; T = 114 mm; C = 17 mm. — @ Koon Tan "4/5 1914. L = 222 
