136 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 
Fam. Ardeidz. 
285. Pyrrherodias manillensis. Mryren. — The Eastern Purple Heron. 
Ardea manillensis: Gyldenstolpe I p. 72; Gairdner p. 152. 
The Eastern Purple Heron was fairly common at the swamps of Northern Siam. 
Sometimes it even occurred on the paddy-fields together with some other kind of Herons, 
but it seems mostly to keep to reed-swamps where there is plenty of cover to conceal in. 
It is rather shy and not easy to obtain. 
286. Ardea cinerea jouyi. CLarK. — The Common Heron. 
Ardea cinerea: Gyldenstolpe I p. 72; Gairdner p. 31; Gairdner p. 152. 
3d Nong Meh Lua 7/3 1914. L = 1120 mm.; W = 436 mm.; T = 184 mm.; C = 129 mm. — Irides: 
yellow. Bill: horn colour (lower mandible dirty yellow). Legs: brown. 
A. H. CuarK has (Proc. U.S. Nat. Mus., Vol. 32, 1907, p. 468) separated the eastern 
race of the common Grey Heron on account of its having decidedly paler wing-coverts, 
which are almost ashy white. The upper parts of the body are also a little paler, though 
not considerably so. 
During my Expeditions to Siam I only collected two specimens, one during my 
first journey 1911—1912 and the other one during the last one. 3 
Both these specimens have decidedly paler wing-coverts than European specimens 
shot at the same time of the year, and it therefore seems as if a separation of an eastern 
race would hold good. 
It probably breeds in Siam and Burma. However, I never succeeded in finding 
its nest, but one specimen was shot on the 7th of August 1914 and the other one on the 
Ist of April 1912 and both these dates seems to indicate that it is not merely as a migratory 
bird as it occurs in certain parts of Siam. 
In the Siamese Malaya a few specimens were observed in a mangrove swamp at 
the neighbourhood of Koh Lak during my stay there from December to February. 
287. Mesophoyx intermedia. Waar. — The Smaller Egret. 
Herodias intermedia: Gyldenstolpe I p. 72. 
This Egret is quite common during the cold season and occurs together with other 
members of the same family on the large swampy country along the Menam river. 
In the Siamese Malaya I also met with it, but down there it was not quite as com- 
mon as in other parts of the country and only a few specimens were met with ona swampy 
plain near the coast. 
