THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 93 



?. ad. Koh Lak, S. W. Siam. 6 April, 1919. (No. 5120). 



" Iris dark brown ; bill grey, black at tip, cere yellow ; feet 

 yellow." 



Total length 365 ; wing 260 ; tail 185 ; tarsus 445 ; bill from 

 gape 23 mm. 



An immature female from Langkawi, shot in November, has 

 the wing 245 mm. 



It is impossible to say whether these specimens are really 

 representatives of the resident tropical race, or migrants, as the 

 material is insufficient. From the date, the Langkawi bird is proba- 

 bly true C. t. tinnunculus, or the form recently described by 

 Swann, and that from Koh Lak, T. t. saturatus. Both birds, how- 

 ever, agree with ^wann's race in their rather long tails. Colour 

 affords no help, as both are in very worn and faded plumage. 



Mr. Williamson obtained a female at Koh Lak on Dec. 28, 

 1921 also in worn plumage but rather pale. Total length 340 (in 

 flesh), wdng 247, tail 193 mm. 



Inglis notes that the Kestrel breeds in Cachar, and it is there- 

 fore quite possible that Falco interstinctvs McClelland (P. Z. S., 

 1839, p. 154), from Assam, is the name really applicable. 

 132. Falco severus severus Horsf. 



Falco severus, HorsSeld, Trans. Linn. Soc. xiii, 1822, p 135 (Java) ; 



Williamson, Journ. Nat. Hist. Soc. Sium, i, 1P15, p. 198 



(Bangkok). 

 Falco sp., I., p. 131 (Koh Lak). 



Falco severus has been obtained near Bangkok by Williamson 



and w^e have examined the specimen therefrom. Gyldenstolpe 



doubtfully identifies a bird from the cliffs near Koh Lak with this 



species, and we have it from Cochin-China, so it will probably be 



found in Peninsular Siam. 



Falco peregrinus calidus Lath. 



Falco calidus, Latham, Ind. Orn. i, 1790, p. 41 (India) 

 Falco peregrinus, Williamson, Journ. Nat. Hist. Soc. Siam, iii, 1918, 

 p. 30 (Bangkok). 



!• Gyldenstolpe, Kungl. Sv. Vet. Akad. Handl. M. Baker, Journ. N. H. Soc. Siam, iii, 1919. 



50, No. 2, 1916. (iirst part). 



J. Robinson, Journ. F. M. S. Mas. vii, 1917. Baker, Journ. N.H. Soc. Siam, iii, 1919. 



K. Kloss, Ibis, 1918. (second part). 



L. Robinson and Kloss, Journ. N.H. Soc. Siam, M.I. Baker, Journ. N.H. Soc. Siam, iv, 1920. 



iii, 1919. (third part). 



VOL. V, NO. 2, 1922. 



