THE BIRDS OF SOUTHWEST AND PENINSULAR SIAM. 231 



Total length cT, 140,140,142, 186, 138; 9, 138, 188; wing 

 c?, 68, 69, 67, 67, 67; cT, 62, 66; tail c7, 62, 61,62, 58, 60; 9,58, 60: 

 tarsus 6, 18, 18. 18, 17, 18; ?, 18, 18; bill from gape d, 16, 17.5, 18, 

 17.5, 17; $.18, 17 ram. 



The White-bellied Cyornis is the commonest of all the blue 

 flycatchers in the Peninsula. We can find no geographical differences 

 in a large series of examples ranging from the neighbourhood of 

 Malacca to Central and East Siam, and therefore feel unable to 

 recognise 0. chersonites. 



317. Cyornis magnirostris Blyth ? 



Cyornis magnirostris, Blyth, Journ. Asiat. Soc. Bengal, xviii, 1849, 



p. 814 (Darjeeling). 

 Cyornis magnirostris, A., p. 229 (Laynah to Yictoria Point); F., 



p. 51 (Trang); L,, p. 104 (partim : Junk Seylon) 

 Siphi'i magnirostris, C. i., p. 290 (Malewoon). 



c5" subad. Tasan, Chumporn, Peninsular Siam, 14 March 1919 

 (No. 4580). 



" Iris dark ; bill black, pale at base ; feet whitish ". 



Total length 148 ; wing 73; tail 59; tarsus 18.5; bill from 

 gape 19 mm. 



On account of its large bill we record this bird as above : it 

 differs from an adult male of the species in having no bluish edges 

 to the wing feathers and in having the frontal band far paler and 

 therefore more pronounced : the rufous of the breast extends more 

 narrowly up the throat and falls distinctly short of the mandible. 



318. ryornis coerulifrons Baker. 



Cyornis magnirostris coerulifrons, Baker, Bull. Brit. Orn. Club, 



xxxix, 1918, p 8 (Patiyu); M., p. 213 (Patiyu). 

 Cyornis di lilaema, F , p 52 (Trang). 



6. Tapli, Pakchan, Peninsular Siam, 4 March 1919 (No. 4424). 



" Iris dark; bill black ; feet purplish". 



Total length 147; wing 71; tail 68; tarsus 18; bill from 



gape 17 mm. 



li Gyldenstolpe, Kungl. Sv. Vet. Akad. Handl. M. Baker, Journ. N. H. Soe. Siam, iii, 1919. 



56, No. 2, 1916. (first part . 



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



K. Kloss, This, 1918. (second part)' 



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



iii, 1919. (third part). 



VOL. V, NO. 3, 1924. 



