KUNGL. SV. VET. AKADKMIKNS HANDLINGAR. HAND 56- N:() 2. 17 



Several of these points of charactcristic agrec with the specimen in my oollection. 



In my former paper 011 the Birds of Siarn (Kungl. »Svenska Vetenskapsakademiens 

 Handlingar Band 50. N:o 8 p. 18) the wing measurement of my specimen of C. mac- 

 rorhynchus Wagl. is given to 220 mm. This is a misprint for 326 mm. which I herewith 

 take the opportunity of correcting. 



2. Urocissa occipitalis. Blytii. The Red-billed Blue Magpie. 



Urocissa magnir ostris: GouM p. 151. 



Urocissa occipitalis: Gyldenstolpe I p. 19; Gyldenstolpe II; Gyldenstolpe III p. 164. 



1 ad. Koon Tan, May 1914. Wing = 201 mm.; Tail = 428 mm.; (ulmen = 33 mm.; Tarsus = 40 

 mm. — 1 J 1 juv. Koon Tan 1914. Length = 335 mm.; Wing = 176 mm.; ('ulmen = 33 mm. — Iris = 

 brown; Legs = yellow. 



This beautiful Magpie seems to be distributed över the whole of Siarn, but it is 

 apparently very local and could be totally absent from a locality though appearing again 

 close by in a place showing a similar condition as the former. Most often they were 

 observed in thin tree jungle but sometimes even in shrub-jungles. Especially along the 

 course of the Meh Ping river they were very abundant and small parties were seen almost 

 every day. When flying from place to place they always followed each other in a long 

 filé which has also been stated by Davison. As a rule this species is very shy and diffi- 

 cult to obtain. 



The immature birds are differing from the adult specimens in being ashy grey on 

 the upper parts of the body; the head all round, sides of the neck, throat and före neck 

 dusky brown; the large white occipital patch is very well-marked; abdomen and under 

 tail-coverts pure white without any bluish shade; thighs white; rest of the plumage as 

 in the adult though never of the same rich blue colour. 



In the adult birds the bases of the quills seen from below are påle salmon coloured 

 which extends along the inner webs of the quills. 



3. Dendrocitta rufa. Scop. — The Indian Tree-pie. 



Dendrocitta rufa: Parrot p. 119; Gyldenstolpe I p. 19; Gyldenstolpe II; Gyldenstolpe III p. 164. 



1 ad. Koon Tan, May 1914. Wing = 45 mm.; Tail = 227 mm.; Culmen = 25 mm.; Tarsus = 28 mm. 



Curiously enough the Indian Tree-pie was very rare in every part of the country 

 visited during my second journey to Siarn and the Siamese Laos States. In the most 

 northern parts of the country it seems to be totally absent. During my former journey 

 1911 — 1912 I found it quite common in the dry forests near Den Chai and Pak Pan, 

 places situated at about Lat. N. 17° 40'. Further north I visited large areas of land 

 showing a similar kind of vegetation but I never observed a single specimen myself. 

 In the collections of Mr. E. Eisenhofer I, however, found a few specimens shot at the 

 neighbourhood of Koon Tan and Pa Hing. 



K. Sv. Vet. Akad. Handl. Band 56. N:o 2. 3 



