THE 
JOURNAL 
OF THE 
Natural History Society of Siam. 
Volume III. BANGKOK. Number 2. 
ON A FOURTH COLLECTION OF SIAMESE MAMMALS. 
By C. BopEN KLoss, F.z.s. 
The present contribution deals with parts of the collections 
obtained in Western Siam by Mr. K. G. Gairdner, and in North Siam 
by Messrs. Williamson and Smith’s collectors ; and my thanks are also 
due to Dr. Malcolm Smith, Messrs. W. L. Williams, H. C. St. J. 
Yates, A. J. Irwin, W. J. F. Williamson and J.J. McBeth for sending 
various specimens for examination. 
As to some of the more obscure localities mentioned :—Sikawtur 
and Me Taw are in Western Siam, 40-50 miles N.W. of Raheng, and 
cut off from the main Me Ping river valley by a big mass of hills from 
3,000 ft. to 4,000 ft. in height. 
All the following are N.N.E. of Nakon Lampang, North Siam :— 
Me Puan. A right bank tributary of the Me Wang: the col- 
lection was made in evergreen jungle between 1,500-2,000 ft. 
Pa Meang, Me Nga. One side of this hill drains into the Me 
Kong: Pa Meang is a tea-garden at about 2,000 ft. 
Ban Phong Tham and Ban Me Yen are in the Me Wang forest 
at no great height. 
1. Macaca irus Cuvier. 
12 juv. from Paknampo, Central Siam [ No. 2689/CBK. ]. 
Collected by Mr. K. G. Gairdner. Orig. No. 487. 
Head-skin and skull only, but evidently a very dull-coloured 
young animal. A few black hairs on the forehead. A small tuft on 
the crown. 
