15 
NEW OR NOTEWORTHY BIRD-RECORDS FROM SIAM, 
By W. J. F. WILLIAMSON, F.Z.S., M.B.0.U. 
Of the birds mentioned in the following list, the majority do not 
appear to have been recorded from this country before, while the re- 
mainder are worthy of note by reason of the length of time which 
has elapsed since they were last obtained, the considerable extension of 
their local range, or other circumstance. The new records, 38 in 
number, are marked with an asterisk (*). 
The specimens obtained at Bangnara, Peninsular Siam, and in 
various localities in the north of the country, were procured by my 
collectors, and ths measurements of total length (where given) are as 
noted by them. The wing-measurements are my own, and in making 
them I have followed the method advocated by Hartert (Nov. Zool. 
XXIV., p. 271, footnote), z.e., to flatten the wing against the rule and 
thus stretch it out toits fullest extent. Hartert holds that, by measuring 
in this manner, greater accuracy and uniformity are obtained than by 
allowing the wing to retain its natural curve. With this view Iam 
inclined to agree, as the slightest pressure causes the tip of the wing 
to flatten somewhat and thus increases the measurement, at times 
unwittingly. Seeing, however, that both methods are in use, it is 
necessary to state that the one here followed adds 1 or 2 millimetres to 
the length of the wings of even the smallest birds—and, of course, more 
for the larger ones. It isa pity that a uniform system of measuring 
has not been generally adopted. 
I have to record my thanks to Mr. H. C. Robinson, Director of 
Museums and Fisheries, Federated Malay States, for kindly assisting 
me to identify several of the birds in this list.~ 
The following abbreviations are used :—T’. L.=Total length (in 
the flesh). W=Wing. T.=Tail. 
Family CORVIDA— Crows, etc. 
*1. Machlolophus spilonotus (Blyth). The Black-spotted 
Yellow Tit. 
My collector obtained a specimen on Doi Nga Chang, a hill near 
Lampang, Northern Siam, at a height of 3,500 ft., in February 1917. 
VOL. III, NO. I, 1918. 
