46 NILS GYLDENSTOLPE, ZOOI.OGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



74. Phylloscopus tennellipes. Swinh. The Pale-legged Willow-Warbler. 



Phylloscojnis tennellipes: Ilobinson III p. 755. 



J 1 Den Chai 8 / 2 1912. L = 95 mm.; W = 55,5 mm.; T = 44 mm.; C = 8 mm ; Tarsus = 16 mm. 

 — Irides: black. Bill: horn colour. Legs: påle brownish yellow. 



When writing my former account of the Birds of Siarn (Kungl. Svenska Veten- 

 skapsakademiens Handlingar Band 50. N:o 8. 1912) I omitted to record a specimen of 

 Phylloscopus tennellipes Swinh. which I shot near Den Chai in Northern Siarn. 



Fam. Turdidae. 



75. Geocichla citrina. Lath. — The Orange-headed Ground-Thrush. 



Geocichla citrina: Robinson & Kloss p. 63; Gairdner p. 149. 



J 1 Koh Lak Paa 7 /i 2 1914. L = 190 mm.; W = 107 mm.; T =, 65,5 mm.; C = 18 mm.; Tarsus = 

 30 mm. — $ Koh Lak 12 /i 2 1914. L = 185 mm.; W — 106 mm.; T = 68 mm.; C = 18 mm.; Tarsus = 

 29 mm. — Irides: brownish black (J 1 ) or brown (^); Legs: flesh colour. 



Not common in the parts of the country visited by the Expedition and only two 

 specimens were obtained in the Siamese Malaya. The male was shot on the slopes of a 

 mountain near the Tenasserim boundary and the female on a limestone mountain, densely 

 covered with evergreen jungle and situated quite close to the sea-shore. 



As a rule this species keeps on the ground only moving up in a tree when being dis- 

 turbed in some way. It is not very shy but still rather difficult to obtain on account of 

 its retiring habits. The female is much paler-coloured than the male and has the upper 

 back and scapulars suffused with olive-green. 



76. Geocichla innotata. Blyth. The Malay Ground-Thrush. 



Geocichla innotata: Robinson & Kloss p. 63; Robinson III p. 752. 



J Koon Tan. W = 115 mm.; T = 72 mm.; C = 19 mm.; Tarsus = 28 mm. 



Rather astonishing is that a specimen of the Malay Ground Thrush was shot by 

 Mr. E. Eisenhofer's native collector as far north as at Koon Tan, where the othcr allied 

 form G. citrina Lath. more probably ought to have been found. But the Koon Tan 

 specimen does not show any sign of the white tips to the median wing-coverts which is 

 the main point of difference between these two related forms. The two specimens ob- 

 tained in the Siamese Malaya have very marked white tips on the median wing-coverts 

 and therefore clearly belong to G. citrina Lath., if this really is a distinct species and 

 not only a seasonal variation. However, I have used both these names until more 

 material from different seasons and localities have been carefully examined. 



