SYLVIXDA. 
Genus PHYLLOSCOPUS Boie. 
Phylloscopus borealis (Bias.). Arctic Willow-Warbler, 
Phylloscopus borealis borealis (Bias,), 
Phyllopneuste borealis Blasius, Naumannia, 1858, p, 313 : Lake 
Ochotska. 
Distr , — Malay Peninsula. 
Sumatra; Rhio Archipelago; Anamba Islands; Nias Island, 
West Sumatra. 
Borneo; Natuna Islands, 
Java; Karimon-Java Islands. 
Phylloscopus borealis examinandus' Stres. 
Phylloscopus borealis examinandus Stresemann, Nov, Zool. xx, 
IQI3, P- 353 : Bali. 
Distr, — Bali, 
Phylloscopus borealis xanthodryms Swinh.a 
Phyllopneuste xantkodryas Swinhoe, Proc. Zool. Soc. 1863, p, 296: 
Amoy. 
Distr , — ? Sumatra. 
Borneo, 
Java. 
Phylloscopus nitidua Blyth, Green Willow- Warbler. 
{Phylloscopus nitidus nitidus Blyth. 
Phylloscopus nitidus Blyth, Journ. Asiat, Soc. Bengal, xii, 1S43, p. 
965 : Calcutta. 
Distr . — Extra-limitaL ] 
Phylloscopus nitidus pi umbei tarsus Swinli. 
Phylloscopus plumbeitarsus Swinhoe, Ibis, 1861 , p, 330: between 
Taku and Peking. 
Distr. — Peninsular Siam. 
Phylloscopus tenellipes Swinli. 3 Pale-legged Willow-Warbler, 
Phylloscopus tenellipes Swinhoe, Ibis, 1860, p. 53 : Amoy. 
Distr Peninsul ar Siam . 
1 C. B, Ticehurst (in litt.) “to me not recognizable”. 
* Some of our own previous records of xantkodryas from various parts 
of Malaysia, and those of some other authors, we now consider as very 
doubtful, for it appears that the character of a relatively large first primary 
will not always separate it from b . borealis . We have, however, seen birds 
from Borneo quite clearly belonging to xantkodryas. 
i Hume has recorded P. tnagnirostris Blyth from near Malacca, but as 
the species has not again been obtained we have omitted it from the list 
pending confirmation. 
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