56 MESSRS. ROBINSON AND KLOSS ON 



.„fBill decurved, not pitted at tip; sexes dissimilar . . lionlratula cnpemis. 



I Bill almost straight, pitted at tip ; sexes similar . . • • . . 41 



., j Black niarkin{J!s on head and neck longitudinal . . • • . . 42 



(Black markings on head and neck transverse . . Scohpnx rusticaln. 



I Distance between tips of shortest secondries and longest 



.., primary less than 2 inches ; tail feathers 18 • . Gallinago ncmoricola. 

 Distance between tips of shortest secondries and longest 



[ primary more than 2 inches . . • ■ • • . • 43 



... (Outer tail feathers not narrowed, and not exceeding 16 Gallinago gallinago. 



' (Outer tail feathers narrowed, exceeding 18 .. .. •• ..44 



.. /Tail feathers 26; outer 8 on each side very narrow 



I Tail feathers 20; outer 6 on each side rather narrow . . 



Gallinago sthennra. 

 Gallinago vicgala. 



56. Glareola pratincola maldivarum Forst. 



(rlareola {Pratincola) maldivarum, Forster, Faun. Ind., p. 11, 



1795 (Maldives) ; I., p. 142 (Koh Lak). 

 Glareola orientalis, A., p. 454. 



c^. Koh Lak, S. W. Siain. 6 April, 1919. (No. 5110). 



" Iris dark ; bill black, crimson at base ; feet greyish black." 



Total, length 228; wing 189; tail 82; tarsus 37; bill from 



gape 25.5 ram. 



Tromas ardeola Payk. 



Dromas ardeola, Paykull, Kungl. Yet. Akad. Handl. Stockh. xxvi, 

 1805, pp. 182, 188, tab. 8 (India) ; Robinson, Journ. Fed. Malay 

 States Mus. v, 1918, p. 17 (Pulau Pintu Gedong, Selangoi). 



The Crab-Plover has once been obtained in the Straits of 



Selangor and may occur on the west coast of Siam. In colour the 



bird is mainly black and wliite, and may be recognised by the 



characters given in the key, 



57. Orthorhamphus magnirostris scommophorus Oberholser. * 



Esacus magniroatris, A., p. 459 (Mergui Archipelago). 

 Orthorhamphus magnirostris scommnjjhorus, Oberholser, Proc. U. S. 

 Nat. Mus. 55, 1919, p 133 (Tambelan Ids.). 



6 ad. Dc Lisle Id. (Koh Piara), W. Siam. 19 February, 1919. 



(No. 4128). 



* We use Oberholser's niime, though, as MathewS^and Iredale point 

 out (Man. Birds Australia, i, 1921, p. 118), its application is based on a 

 misconception due to an error in labelling. 



A. Ilnmc, & Davison, Stray Feathers, vi, 1878. E. O. (jrant. Fasciculi Malayenses, iii (Birds), 1905. 



B. Miiller, Die Ornis rtcr Insel Siilan«;a, 1882. F. Robinson and Kloss, Ibis, 1910-11. 



C. Oatcs, ttncls lint. Biirmah, Vols. i. iV- ii, 1883. G- frairdncr, Jouin. N.H. Soc. Siam, i, 1915. 



D. IJonholc, r.Z.S. 1001, Vol. i H. Kobinson, Journ. F. M. S. Museimis, v, 1915. 



JOURN. NAT. HIST. SOC. SIAM. 



