72 JOURNAL, NATURAL HIST. SOCIETY OF SIAM. Vol. I. 
virtue of the Anglo-Siamese Treaty of 1909. As localities are not 
always stated by Messrs. Robinson and Kloss, it is possible that some 
of the birds given in this paper were not found in what is now 
Siamese territory. 
Next in chronological order is Mr. K. G. Gairdner’s List of the 
Commoner Birds found in Siam, which was published in 1912 in the 
Journal of the Siam Society, and comprises some 140 species, for the 
most part personally obtained or observed by Mr. Gairdner in 
different parts of the country, including 26 in Bangkok. An interest- 
ing feature of the list is the attempt which has been made to give the 
Siamese names of a number of the birds mentioned. 
Finally, we have the paper published in 1913 by Count Nils 
Gyldenstolpe, the Swedish naturalist who spent nearly six months in 
Siam between November 1911 and May 1912. This contains a list of 
191 birds collected or observed in various localities ranging from 
Sriracha and Koh-si-chang in the south, to about as far as Dene-chai 
in the north. It is a notable addition to the published lists of our 
avifauna. 
The descriptions in this paper will be as full as is considered 
necessary to enable the various species to be readily identified, but no 
attempt will be made to render them technically complete. Further, 
in order to avoid undue detail, one measurement only will usually be 
given, viz., the total length of the bird, but collectors are recommended 
to take and record the following measurements :— 
Lenyth, From tip of bill to tip of longest tail feather, with the 
bird laid flat. 
Tail. From root of tail to tip of longest tail feather. 
Wing. From bend of wing to tip of longest primary. 
Tarsus. From centre of joint connecting tarsus with tibia, to 
basal joint of middle toe. 
Bill. From tip of bill to angle of gape. 
No remarks will be made on the nesting habits of the species 
dealt with. The reason for this omission is two-fold. In the first 
place, any notes on the subject, however slight, would unduly increase 
the length of this paper, and so retard its completion. Secondly, one 
of the members of the Society is making a special study of the nests 
and eggs of Siamese birds, and it is hoped that he may be in a position 
before very long to give us the benefit of his observations on this most 
