76 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



Tliis species which is closely allied to Cyornis rubeculoides Vig. was very common 

 in the North of Siarn and a fine series was collected. 



Robinson & Kloss state (Ibis 1911 p. 52) that it ought to be regarded as a southern 

 form of C. tickellice Blyth. I think that it must be placed nearest to C. rubeculoides 

 Vig., which is practically intermediate between C. dialilcema Sal vad. and C. tickellice, 

 Blyth. or C. sumatrensis Sharpe. Cyornis dialilcema differs from C. rubeculoides which 

 I also obtained in Siarn, by having the abdomen and flanks pure white, while these same 

 parts in C. rubeculoides are tinged with orange buff. The orange colour of the breast and 

 throat does not extend so high up on the chin in C. dialilcema as it does in C. rube- 

 culoides, C. tickellice and in C. sumatrensis. 



138. Cyornis rubeculoides. Vig. — The Blue-throated Flycatcher. 



Cyornis rubeculoides: Gairdner p. 149. 

 Siphia rubeculoides: Bonhote p. 60. 



J Koon Tan 3 % 1914. L = 138 mm.; W = 66 mm.; T = 61 mm. — g Koon Tan 2 7s 1914. 

 L = 143 mm.; W = 69 mm.; T = 64 mm.; C = 11,5 mm. — J 1 Koon Tan »/s 1914. L = 130 mm.; 

 W = 67 mm.; T == 61 mm.; C = 11,3 mm. — Irides: brownish black. Bill: black. Legs: påle brown. 



Not as common as C. dialilcema, Salvad. though occurring in the same locahties 

 but apparently at higher altitudes. The specimens obtained by me were all shot on the 

 summits of the highest hills among the Koon Tan range where they occurred either in 

 pairs or in small flocks among the pine-trees. 



In colour they very much resemble C. dialilcema but the upper parts of the body 

 are of a paler blue. The flanks and sides of the body are buffy white instead of pure 

 white and the orange colour of the breast extends higher up on the throat. 



139. Cyornis sumatrensis. Sharpe. 



Cyornis sumatrensis: Robinson & Kloss p. 51; Robinson III p. 147. 



<$ Koh Lak Paa 7 /i2 1914. L = 130 mm.; W = 67 mm.; T = 62,4 mm.; C = 11,2 mm.; Tarsus = 

 16,8 mm. — $ Koh Lak Paa 7 /i» 1914. L = 125 mm.; W = 64,5 mm.; T = 60 mm. C = 10 mm.; Tarsus = 

 16,5 mm. — Irides: brown. Bill: black. Legs: plumbeous. 



Only two specimens of this Flycatcher were obtained during my journey. They 

 were both shot in a dense evergreen forest among the hills on the boundary between Siarn 

 and Tenasserim. 



This is a somewhat rare species, which until quite recently only was known from 

 the type and another male obtained in Kelantan and recorded by Hartert (Novitates 

 Zoologicse, Vol. IX, 1902 p. 549). In the last few years, however, several specimens and 

 among them some females — until then undescribed — were obtained by Robinson & 

 Kloss during their Expediton to the Northern Parts of the Malay Peninsula (vide. Ibis 

 1911 p. 51 — 52). It has also been recorded by Robinson from the Siamese Islands 

 of Koh Samui and Koh Pennan. 



