56 MESSRS. ROBINSON AND KLOSS ON 



,f^/Bill decurved, not pitted at tip; sexes dissimilar 

 (Bill almost straight, pitted at tip ; sexes similar 



Host rat nla cnjJt'usi.s. 



41 



... (Black markin}i;s on head and neck lonpfitudinal . . • • . * ' '^'^ 



(Black markings on head and neck transverse . . Scoloprtx rii.sticola. 



[Distance between tips of shortest secondries and longest 



.t) primary less than 2 inches ; tail feathers 18 . . Gnllinaijo ncmoricola. 

 " Distance between tips of shortest secondries and longest 



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



,., /Outer tail feathers not narrowed, and not exceeding 16 GaUinago (jallinago. 



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



- , jTail feathers 26; outer 8 on each side very narrow . . GaUinago dhenvra. 



(Tail feathers 20; outer 6 on each side rather narrow . . GaUinago mcgaln. 



56. Grlareola pratincola maldi varum Foist. 



Glareola {Pratincola) maldivarum, Forster, Faun. Ind., p. 11, 



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

 Glareola orientalis, A., p. 454. 



6. Koh Lak, S. W. Siam. 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 mm. 



Eromas 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, 1913, p. 17 (Pulau Pintu Gedong, Selangor). 



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 maiialj* black and white, and may be recognised by the 



characters given in the key. 



57. Orthorhamphus magnirostris scommophoriis Oberholser. * 



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

 Orthoi'harnphus macjnirostris scommophorus, Oberholser, Pioc. U. S. 

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



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

 (No. 4128). 



* We use Oberholser's nnme, though, as Mathews and Tredale point 

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

 misconception due to an error in labelling. 



A. IIiiiuo, iV DMvison, stray Feathers, vi, 1878. E. O. Grant, Fasciculi Malaycusos. iii (Birds), 1905. 



B. AliilU'r. Die Drnis (lev hisd KalanKa, 188'2. F. Robinson and Kloss, Ibis, I!)10-ll. 



C. ( laics, Hinls Itrit. ]!iiniiab, Vols. i. & ii, 1883. G. Gairdner, Journ. N. 11. Soc. Siam, i, 1915. 



D. Bonhote, r./.S. 1901, Vol. i H. Bubinson, Journ. F. M. S. Museums, v, 1915. 



JOURN. NAT. HIST. SOC. SIAM. 



