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



134. Pericrocotus cinereus. Lafr. — The Ashy Mini vet. 



Pericrocotus cinereus: Williamson I p. 43; Williamson II p. 91; Robinson & Kloss p. 55; Muller p. 365. 



J 1 Koh Lak 16 /ia 1914. L = 185 mm.; W = 98,2 mm.; T = 97 mm.; C = 10,5 mm. — Irides: brown. 

 Bill: black. Legs: black. 



The Ashy Minivet seems to be very rare in Siarn and during the whole journey only 

 one specimen — - in full plumage — was obtained outside Koh Lak. 

 A winter visitor only. 



Fam. Muscicapidae. 



135. Alseonax latirostris. Raffl. — The Brown Flycatcher. 



Alseonax latirostris: Gyldenstolpe III p. 169; Williamson I p. 43; Robinson IIT p. 742; Robinson & Kloss 



p. 51; Muller p. 363; Williamson II p. 208. 

 Hemrichelidon latirostris: Gould p. 151. 



J 1 Koon Tan 21 / 9 1914. L = 115 mm.; W = 69 mm.; T = 51 mm.; C = 9,5 mm. — J* Koon Tan 

 30 /4 1914. L = 120 mm.; W = 67 mm.; T = 51 mm.; C = 10 mm. — J* Koon Tan 2 % 1914. L = 121 

 mm.; W = 68 mm.; T = 47 mm.; C = 9 mm. — <£ Chum Poo 2 /r, 1914. L = 125 mm.; W = 67 mm.; 

 T = 48,5 mm.; C = 9 mm. — Irides: black. Bill: black (base of lower maudible dirty yellow.) Legs: black. 



The Brown Flycatcher was fairly common in the North of Siarn, but it also occurs 

 in more southern parts having been recorded from Bangkok by Williamson and from 

 the Malay Peninsula by Robinson. 



This species is generally considered as a winter visitor to South eastern Asia, 

 having its breeding places in Eastern Siberia, Corea and Northern China. 



During my journey I obtained specimens in April, May and September which seems 

 to indicate that it may possibly breed in Northern Siarn too. However, I never found 

 its nest. 



As regards size and colour the Siamese specimens are absolutely identical to speci- 

 mens from Saghalin in the collections of the Royal Natural History Museum of Stockholm. 



136. Alseonax siamensis. Gyldenstolpe. 1 — The Siamese Brown Flycatcher. 



This new species is related to Alseonax latirostris Raffl. from which it is, however, 

 clearly distinguished by being umber brown ( »Saccardos Umber», Ridgway, Plate 39) 

 above instead of ashy brown. In several other particulars it also differs from that spe- 

 cies, as seen by the description given below. 



Adult male: General colour above »Saccardos Umber» (Ridgway. Nomencl. Colours 

 plate 39); upper tail-coverts washed with ferruginous; wing-covérts dusky brown, mar- 

 gined with »Saccardos Umber»; primaries and secondaries dusky brown, the latter edged 

 with isabelline on the inner webs; tail dusky brown with påle brown shafts; lores and 

 a narrow line round the eye greyish white; ear-coverts »Saccardos Umber»; chin and upper 

 throat greyish white slightly washed with brown; lower throat, breast and flanks ashy 



1 Ornith. Monatsber. 1916. No. 2, p. 27. 



