Journal of the Federated Malay States museums - Sabrizain.org

igi7-l H. C. Robinson: Birds from Pulau Langkawi. 139
imply. It can generally be met with in Klang Straits during
the months November to February and has also been noted at
numerous other localities between Malacca and the Kedah
River.
I |. OCHTHODROMUS MONGOLUS PYRRHOTHORAX (Gould).
Ochthodromus pyrrhothorax, Sharpe, torn. cit. p. 226:
A', bina nut Kloss, p. 12, Robinson, antea,vo\. V, p. 142 1
1915).
Aegialitis mongolicus, Ogilvie, Grant. Fascic. Malay.
Zool. iii, p. ri8 (1906 .
Ochthodromus mongolus, Gyldenstolpe, p. 144.
a-b.
"•
. Koh Mule (Pulau Muntia) Trang, S. W.
Siam. 4th January 1917. Nos. 3843, 4.
.'.
- Iris dark hazel, bill black, feet dirty slate."
I am doubtful if the typical race of this plover, for this
form is not more than a subspecies, is ever found west of North
Borneo. I have certainly, with one very doubtful exception,
seen none from any part of the Malay Peninsula, all being
referable to the present race which, as Sharpe points out, has
a slightly longei tarsus.
15. Aegialitis alexandrina peroni (Bp.)
Aegialitis peroni] (Bp.) ; Sharpe, torn. cit. p. 274;
Gyldenstolpe, p. 144.
Aegialitis alexandrina. Robinson, antea, vol. V, p. 142;
vol. VII, p. 70 (1916).
.
a-b. 3 i ad. Burau, N. W. Langkawi, 23rd April,
1911.
W. side Pulau Telibun, Trang, S. \Y. Siam.
2nd January. 1917. [No. ^ s 5 1 -
J
" Iris dark hazel, bill black, feet slate."
Until Gyldenstolpe, Hoc. cit.) identified a pair of plovers
obtained at Koh Lak in Peninsular Siam as this species I had
hitherto regarded our fairly considerable series as a tropical
resident race of Ae. alexandrina, which indeed it is.
Seven males from various part^ of the Peninsula have a
wing of 93-99 mm. and eight females 93-100 mm.
A eries from Borneo, the loan of which we owe to the
kindness of the Sarawak Museum authorities has the wing in
four males 91-94 mm. and in three females (one very worn)
88-94 mm. so 'hat the Peninsular race would appear to be
slightly larger. In addition the Peninsular birds have the
dark loral streak much less strongly developed, while the
feathers of the mantle an somewhat paler with lighter
edgings; the white at the base of the inner primaries is also
more extensive. Material from Java and from Timor, which
is probably the typical locality, is however required before the
mainland race can safely be separal