18 NILS GYLDENSTOLPE, ZOOI.OGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXrEDITIONS TO SIAM. 



The Indian Tree-pie is a very characteristic bird and is not easy to overlook especially 

 on account of its syllabic note which makes its presence known at rather a far distance. 



Therefore I am perfectly sure that it does not occur in Northern Siarn north of 

 Lat. 18°. 



4. Crypsirhina varians. Lath. — The Black Racket-tailed Magpie. 



Crypsirhina varians: Grant p. 66; Williamson I p. 42; Williamson II p. 76; Gyldenstolpe I p. 19; Gylden- 

 stolpe II; Gyldenstolpe III p. 164. 



J 1 Koon Tan 15 /i2 1914. Length = 292 mm.; Wing = 114 mm.; Culmen = 19,5 mm.; Tail = 184 mm. 

 — $ Koh Lak 20 /i 1915. Length = 296 mm.; Wing = 114 mm.; Culmen == 20 mm.; Tail = 189 mm. — 

 $ Chum Poo -jb 1915. Length = 303 mm.; Wing = 111 mm.; Culmen = 19 mm.; Tail = 195 mm. — Iris: 

 Påle blue. Bill: Black. Legs: Black. 



The Black Racket-tailed Magpie was rather common in brush-, secondary- and 

 bamboo-jungles över the whole of Siarn. Even as far south as at Koh Lak and its surro- 

 undings it was far from being rare. 



The Siamese specimens are absolutely identical with those from Java, both as to 

 size and colouring. 



5. Cissa chinensis. Bodd. — The Green Magpie. 



Cissa chinensis: Gyldenstolpe II; Gyldenstolpe III p. 164; Gairdner p. 148. 



g Doi Par Sakeng 17 / 7 1914. L = 365 mm.; W = 150 mm.; T = 205 mm.; C = 30 mm. — J 1 

 Koon Tan 2 7r, 1914. L = 358 mm.; W = 146 mm.; T = 211 mm.; C = 31 mm. — J 1 Koon Tan 16 / 9 1914. 

 L = 275 mm.; W = 150 mm.; C = 30 mm. — $ Doi Par Sakeng u / 7 1914. L = 356 mm.; W = 147 mm.; 

 T = 211 mm.; C = 29 mm. — $ Koon Tan 15 /s 1914. L = 316 mm.; W = 137 mm.'; T= 165 mm.; 

 C = 27 mm. — Irides: Reddish brown. Bill: coral red. Legs: coral red. Ring round the eye: coral red. 



This beautif ul Magpie was fairly common in the thick vegetation covering the lower 

 hills of Northern Siarn. As already stated by Davison it has much the same habits as 

 the Laughing Thrushes of the genus Garrulax, but I never found it together with these 

 birds as stated by this same author. When observed it was always single sculking among 

 the thick and thorny vegetation. I never heard it utter any notes, only when being 

 wounded it uttered a hoarse, rather unpleasant call. 



The female specimen obtained at Koon Tan on the 15th of May 1914 has a some- 

 what differing colouration from the other specimens collected and though its dimensions 

 are smaller than the other birds, I think it is wisest not to separate it under a subspe- 

 cific name. 



These Magpies are very variable and the colour of the plumage undergoes a con- 

 siderable change af ter death. Still this specimen differs a great deal and I therefore give 

 a full description of it. 



Adult female: General colour above greenish blue (in skin.); lores, feath ers round 

 the eye, ear-coverts and a broad band encircling the nape pure black; forehead yellowish 

 green which colour even occupies the crown and the long crest feathers, though fading 



